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= PA-RISC Linux TODO (actually this is Helge's TODO list) =
 
= PA-RISC Linux TODO (actually this is Helge's TODO list) =
  
== Updates for next newsletter ==
+
== Status & TODO 2021-11-24 ==
* fixed 64bit SMP kernel & sticon on machines with more than 4GB RAM
+
* STARTED: [https://patchwork.kernel.org/project/linux-parisc/patch/20211031204952.25678-2-svens@stackframe.org/ Visualize FX framebuffer/DRM support (by Sven Schnelle)]
* Dave found O_SYNC bug in glibc (Typo in hppa __O_SYNC define in <bits/fcntl.h>)
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* Fix mouse in qemu (HP-UX).
* syscall fixes with compat kernel
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* Implement TOC in qemu ?
* Migration parisc-linux.org
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* __muldi3 routine in libgcc.a in kernel uses xmpyu FP instruction (qgis mail) -> bad! -> add linker check?
* debian-ports.org access
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** https://patchwork.kernel.org/project/linux-parisc/patch/YWSSVwQ9tc9YaC+f@ls3530/
* 3.13 with all patches in (coherency)
+
** 64bit kernel still needs patches (or gcc fix from Dave)
* buildds running
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* qemu bug building gcc-arm-none-eabi: https://buildd.debian.org/status/fetch.php?pkg=gcc-arm-none-eabi&arch=hppa&ver=15%3A10.3-2021.07-1&stamp=1633455020&raw=0
* wiki migration finished (05 Feb 2014)
+
** same for abinit: https://buildd.debian.org/status/fetch.php?pkg=abinit&arch=hppa&ver=9.6.1-1&stamp=1634170491&raw=0
* old parisc-linux kernel mailinglist imported into gmane.org - http://dir.gmane.org/gmane.linux.ports.parisc - 23 Nov 2014
+
/tmp/cceXP0uE.s: Assembler messages:
* parisc-linux domain is now owned by Helge (August 2014)
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/tmp/cceXP0uE.s:1493: Error: Invalid Shift/Extract/Deposit Condition.
 
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/tmp/cceXP0uE.s:1493: Error: Undefined absolute constant: '.loc'.
== ABI breakages (HP-UX support) ==
+
/tmp/cceXP0uE.s:1493: Error: Field out of range [0..31] (-1).
* We dropped HP-UX support in kernel 3.14 by changing EWOULDBLOCK==EAGAIN. (I believe we should pull the plug on HP-UX entirely.  If there ever was enough interest, It should be supported in a VM. Machines are relatively cheap now.  So, if someone needs hpux, they can buy a machine for it.) We have a more diverse user space under Linux and I believe in supporting open source, so we should focus on it -> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5a408d53edef3af07ac7697b8bc54a755628450
+
/tmp/cceXP0uE.s:1493: Error: Invalid operands
* Changed RTSIGMIN to 32 (from 37) - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f25df2eff5b25f52c139d3ff31bc883eee9a0ab
+
make[4]: *** [Makefile:1117: alias.o] Error 1
** debian glibc report: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=766605
+
* From Adrian Glaubitz (9/29/2021): The Rust project merged a change [1] that allows rustc to use GCC instead of LLVM as codegen backend for generating machine code through libgccjit. This means that we are in principal able now to build Rust code for all the architectures that GCC support but LLVM doesn't, which includes hppa. Please see this [2] and this [3] comment to see how to get started with cross-building the Rust compiler for a new target using libgccjit. We will have to add these new architectures to the libc crate first, see an example PR for that here [4]. Since I can't work on all these targets myself, I wanted to ask you to help me and get the support for hppa added to libc and rustc where necessary.
** debian kernel bug report: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=766635
+
** [1] https://github.com/rust-lang/rust/pull/87260
** September 7th 2014: First delivery with vmlinux-3.16.0-4 (aka linux-image-3.16.0-4-parisc64-smp_3.16.7-1_hppa.deb)
+
** [2] https://github.com/rust-lang/rust/pull/87260#issuecomment-930221503
** rebuild of following packages needed:
+
** [3] https://github.com/rust-lang/rust/pull/87260#issuecomment-930223504
*** unxz-utils: rebuild unxz to fix usage of SIGXFSZ
+
** [4] https://github.com/rust-lang/libc/pull/2414
*** strace and gdb: fix signal names/numbers
+
* Clean up drivers/parisc/iosapic.c  and drivers/parisc/sba_iommu.c (Mail from Carlos Bilbao)
*** libgc: gives "Cannot set SIG_THR_RESTART handler" error since SIG_THR_RESTART has been SIGXCPU which is now used for threads
+
* QEMU issues:
*** (maybe) gcc-4.9 which links against libgc...? (affects objc related code only)
+
** Track [https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970460 qemu-user: trashes argv0 breaking multi-call binaries] QEMU bug.
*** dietlibc (patch sent upstream) - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=769105  TODO: make patch for dietlibc to use LONG_LONG_PAIR for ftruncate64() and then rebuild util-vserver package
+
** Because of this bug, qemu-user still has build-problems with those packages: lilypond, fceux, perl, sane-backends
 
+
* Finish OpenJDK, see patch and mail from Adrian Glaubitz 05.02.2021.
== Testsuites - to be checked ==
+
* parisc timers: convert to generic clockevent (Arnd Bergmann) - https://patchwork.kernel.org/project/linux-parisc/patch/20201008154651.1901126-14-arnd@arndb.de/
* GLIBC issues: https://sourceware.org/glibc/wiki/PortStatus
+
* qemu: Check "HPPA support for IGNITE-UX install discs" for HP Logic Analyzer 16700A (Mail from Keith Monahan <keith@techtravels.org> Sept 2020)
* We also have a problem with poll in rpcbind on 32-bit kernels. Runs forever. Not analyzed yet.
+
** ncr53c710 driver from amiga: https://github.com/tonioni/WinUAE/blob/master/qemuvga/lsi53c710.cpp
* glib2.0 atomic bug: Dave: I see the problem building various packages -- apt is is one. It occurs when multiple dot processes are started by graph when package documentation is being generated.  The number of dot processes spawned depends on the number of processors on the build system.  However, the faults occur even on a UP system. I debugged one of these segvs enough to see that the problem occurred in a glib2.0 library. It's using the GCC "sync" interface.  
+
* Check if https://lkml.org/lkml/2020/7/23/1246 was added to avoid TLB stalls (commits https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c6fe44d96fc1536af5b11cd859686453d1b7bfd1 and https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2a9127fcf2296674d58024f83981f40b128fffea) - kernel v5.9 seems good.
* From Dave: gcc thread issues including thread cancellation, glib2.0 problem, maybe __tls_get_addr clobber too?
+
* STARTED by Sven: Fix kexec on PA8800/PA8900 CPUs: how to restart the CPUs on these systems?
 
+
* upgrade libgcc via:
== Status & TODO 2015-02-22 (TODO-List by Helge Deller) ==
+
** apt install -f -o Dpkg::Options::="--force-overwrite"
* DONE: Drop HPUX-support from kernel
+
** see: https://raphaelhertzog.com/2011/08/01/understanding-dpkgs-file-overwrite-error/
* Implement ltrace on hppa
+
* qemu
* Fix octave build failure (libinterp/octave-value/ov-class.cc-tst .................panic: Aborted -- stopping myself...)
+
** Check "IGNITE-UX install discs" from Keith Monahan (09/20)
* DONE: debian-kernel: add ppdev driver, needed by CUPS, systemd reports missing module load. (3.17 & 3.16 kernel)
+
** Add pvpanic kernel support? - maybe?
* fix debian installer/partitioner to keep /boot below 2GB of size to prevent boot problems
+
** STARTED: Finish LASI and 82596 NIC for QEMU -> https://github.com/hdeller/qemu-hppa/commits/lasi
* fix VA randomization regarding to stack limits (testcase: ocaml build, temporarily fix: echo 0 > /proc/sys/kernel/randomize_va_space or add to /etc/sysctl.conf: sys.kernel.randomize_va_space = 0), http://git.kernel.org/cgit/linux/kernel/git/deller/parisc-linux.git/commit/?id=9dabf60dc4abe6e06bebcc2ee46b4d76ec8741f2
+
* Probably fixed: Fix stifb kernel hangs with latest kernels (4.9ff)
* PARTLY DONE: push gcc patch for variable CAS (gcc atomic ops, __sync_XXX) upstream (Kernel 3.17, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=89206491201cbd1571009b36292af781cef74c1b) - packages needing rebuild: libatomic-ops, x265, ceph, firebird2.5, gauche, idba, mapsembler2, padevchooser
+
* Add BPF assember implementation
* DONE: shmctl(0, SHM_INFO, (void *)&info) bug -> shows up/crashes debian procenv package -> https://patchwork.kernel.org/patch/5269301/
+
* Enable SPARSEMEM_VMEMMAP_ENABLE
* DONE: debian kernel: Add crc-modules, event, isofs, jfs, mouse, sata, sound, squashfs, udf, uinput, scsi-common, scsi-extra, loop, serial and usb-serial debian-installer packages
+
* ONGOING: Enable UBSAN and fix fallouts
* DONE: Kernel build problem: a) disable -mfast-indirect-calls in Makefile, b) gcc compiler bug in > gcc-4.8.3-3
+
* STARTED: implement CONFIG_VMAP_STACK "virtually mapped stacks and thread_info cleanup" -> https://lwn.net/Articles/693026/
* further implement seccomp syscal, e.g. more modes than just: SECCOMP_MODE_STRICT
+
* PALO - add regular rewind & load to avoid tftp boot timing issues. See mail from Frank Schreiner "PALO issues" (Dec 2018).
* implement kexec syscall
+
* STARTED: Implement kernel VDSO support - https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/log/?h=vdso
* use CONFIG_COMPAT_BINFMT_ELF and get rid of arch/parisc/kernel/binfmt_elf32.c
+
** [https://lore.kernel.org/linux-parisc/4544A34A.6080700@tausq.org/ Randolphs patch]
* why does mc hangs when exiting on sticon ?
+
** [[Vdso]]
* implement .con_font_set (consw) in sticon.c (to be able to change fonts at runtime)
+
*** Get rid of executable stack, maybe use gateway page instead for signal returns?
* modprobe ipmi_si loads the BMC driver, but it could be loaded automatically too..How to get CPU temp? (ipmi-chassis --get-chassis-status crashes the machine).
+
*** Review gettimeofday and clock_gettime() implementation, possibly use a light-weight-syscall and rely on cr16 and cpu speed for more accurate timing? similiar to commit http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=18ad51dd342a7eb09dbcd059d0b451b616d4dafc
* SLAB breaks, SLUB works, why? Mail from Guy Martin.
+
* STARTED: convert old-style rtc driver drivers/input/misc/hp_sdc_rtc.c to new RTC model, remove the procfs and miscdevice interfaces first and replace the ioctl with a struct rtc_class_ops. Arnd Bergmann can review those patches, but Alexandre and Alessandro are the ones who would merge them once the driver is moved to drivers/rtc. (Mail from Arnd Bergmann, 28.04.2016) - see https://patchwork.kernel.org/patch/10701397/
* sparsemem: http://lwn.net/Articles/439472/ -> convert to sparsemem (http://lwn.net/Articles/440056/), patch available from James
+
* check usage of CONFIG_MLONGCALLS, only 14MB/s with debian kernel and dd if=/dev/zero of=here bs=1k count=100000  ?
 
+
* Add some cond_resched() calls to avoid RCU stalls, see commit 2a8bc5316adc998951e8f726c31e231a6021eae2
* userspace
+
* MAYBE: Implement DCACHE_WORD_ACCESS in kernel (Complaint from Linus)
** fix linker -fpie support (fixes debian package ??)
+
* Fix kernel to load -fpie compiled programs not at 0x400000 (ELF_ET_DYN_BASE, e.g. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-4.9.y&id=abb79a56898e044715d8efd07bc1902d27a94870)
** Fix linker to drop unused references (see "checking linker EH-compatible garbage collection of sections" in gcc build log, should fix debian package vlc (edit debian/rules to not set BORKED=yes), ld option --as-needed, see: https://sigquit.wordpress.com/2011/02/16/why-asneeded-doesnt-work-as-expected-for-your-libraries-on-your-autotools-project/)
+
* gcc optimizations:
** provide libphobos packages - gcc-defaults - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=763103
+
** _mcount can be optimized (smaller) by not subtracting offset)
** why does acl2 build hangs process ?
+
** check if we can use -fentry from gcc for _mcount optimization
** why is GNU AS so slow (e.g. when building freeorion, quantlib-swig or yade packages) ? Optimize it! -> function pa_undefine_label() takes most of the time (>80%), testcases: openturns, ...
+
** put PLABELS into read-only section (gcc function pa_reloc_rw_mask() needs modification, see "section mismatches" mails, 11.09.2017)
** gdb crashes Kernel - http://permalink.gmane.org/gmane.linux.ports.parisc/5406
+
* Enable BlockTLB on PA1.x for STI framebuffer (see block tlb info in sti.pdf documentation) and ftp://parisc.parisc-linux.org/docs/pdc32.pdf
** debian-cd to use xorriso
+
* convert unaligned handler to use get_user/put_user inline asm
** debian-cd: do not compress kernel.
+
* Fix boot crash from Al Viro with sti gfx card (24.03.17)
 
+
* debian parisc perl bug (http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721537) shows that mmap on parisc linux is horribly inefficient.  We allocate huge maps for small files. This should be improved. Mailthread: " parisc mmap: private file maps" ,http://www.spinics.net/lists/linux-parisc/msg05083.html  or  https://rt.perl.org/Public/Bug/Display.html?id=119567  https://rt.perl.org/Public/Bug/Display.html?id=119567  
* 3.14 partly: return ((unsigned long) mapping >> 7) & ((SHMLBA >> PAGE_SHIFT) - 1); in arch/parisc/kernel/sys_parisc.c
+
* unaligned warning (from glibc) when running apt-get: https://sourceware.org/bugzilla/show_bug.cgi?id=20243
* 3.14 partly: debian parisc perl bug (http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721537) shows that mmap on parisc linux is horribly inefficient.  We allocate huge maps for small files. This should be improved. Mailthread: " parisc mmap: private file maps" ,http://www.spinics.net/lists/linux-parisc/msg05083.html  or  https://rt.perl.org/Public/Bug/Display.html?id=119567  https://rt.perl.org/Public/Bug/Display.html?id=119567  
+
* kernel work
 
+
** trace irq flags - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=24131a61ec8c2d83431cb818281d3c9db986ab08
* add wiki page about kernel cross-compiling
+
** Add core-objtool for parisc - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=26660a4046b171a752e72a1dd32153230234fe3a
 
+
** ALPHA processor port:
* better implementation to get stack pointer (in return_address(), in stack checker in irq.c, ...)
+
*** Add https://lkml.org/lkml/2007/8/14/259 aboot patch
* physically broken memory in Dave's machine - utilize PDT (http://ftp.parisc-linux.org/docs/arch/pdc20-v1.1-Ch4-pdc.pdf (page #46)) - https://patchwork.kernel.org/patch/2541561/
+
*** New one: https://patchwork.kernel.org/patch/10141217/ (alpha: fix crash if pthread_create races with signal delivery)
 +
*** Kernel patches: http://marc.info/?t=140610652200001&r=1&w=2, The proposed fix is in: http://marc.info/?t=140675670100010&r=1&w=2, http://marc.info/?t=142327510200001&r=1&w=2,
 +
*** qemu-user bug: https://gitlab.com/qemu-project/qemu/-/issues/494
 +
** convert irq handling to use CONFIG_IRQ_DOMAIN_HIERARCHY (serial port problem, action handler msising when registering irq)
 +
** Circular dependency problems with kde packages caused by vlc and ffmpeg (Dave)
 +
*** Solution: Rebuild ffmpeg outside the buildd (as some dependencies have probably been deleted) and upload a +b1 version. Then trigger bin-nmu of phonon package. Finally this resolves then the dependencies of vlc, ffmpeg, phonon, chromaprint, polkit-kde-agent-1, kwrited, kwallet-kf5 and  libkf5notifications-dev...
 +
** Due to very bad performance running multiple copies of dot program (Dave)
 +
*** In vtk6 debian package, adding DOT_NUM_THREADS = 1 helps.
 +
*** Another issue that I have been wondering about is the performance of our kernel spinlock code.  PA 8800 and PA 8900 processors have a cache line length of 128 bytes.  I believe thereare some places where we assume 64 bytes.  We also allocate spinlocks on 16 byte boundaries. We might get better performance if we allocated on 32 (PA 1.X) and 128 (PA 2.0).  Helge: change: __PA_LDCW_ALIGNMENT
 +
*** I've also seen that better performance may be obtained by doing a byte store to spinlock prior to ldcw. This dirties the cache line and allows operation in cache in certain situations. I think this mainly applies to PA 1.X but I'm not sure.  I have some example code somewhere. Helge:  change struct arch_spinlock_t; in spinlock_types.h
 +
** Implement ltrace on hppa
 +
** SLAB breaks, SLUB works, why? Mail from Guy Martin.
 +
** 3.14 partly: return ((unsigned long) mapping >> 7) & ((SHMLBA >> PAGE_SHIFT) - 1); in arch/parisc/kernel/sys_parisc.c
 +
** implement .con_font_set (consw) in sticon.c (to be able to change fonts at runtime)
 +
** better implementation to get stack pointer (in return_address(), in stack checker in irq.c, ...)
  
 
* Kernel: Hard to solve outstanding issues
 
* Kernel: Hard to solve outstanding issues
** megaraid on my rp5470 hangs at boot (maybe because SCSI chassis not connected)? -> use new megaraid driver for debian
+
** megaraid on my rp5470 hangs at boot (maybe because SCSI chassis not connected)? -> use new megaraid driver for debian -> maybe patch https://patchwork.kernel.org/patch/7738911/ needed to enable PCI-PCI bridge?
 
** Fix FireGL X1/X3 in C8000 - currently broken (no DRM and software accel is incredibly slow <strike>plus colors in 24bpp mode are wrong</strike> seems ok in debian 8 sid / 3.16.7 kernel) - Info: manual "Radeon R5xx Acceleration" - http://www.x.org/docs/AMD/R5xx_Acceleration_v1.1.pdf  and generic: http://www.botchco.com/agd5f/?p=50  
 
** Fix FireGL X1/X3 in C8000 - currently broken (no DRM and software accel is incredibly slow <strike>plus colors in 24bpp mode are wrong</strike> seems ok in debian 8 sid / 3.16.7 kernel) - Info: manual "Radeon R5xx Acceleration" - http://www.x.org/docs/AMD/R5xx_Acceleration_v1.1.pdf  and generic: http://www.botchco.com/agd5f/?p=50  
  
 
* Kernel: still missing Linux kernel development (no patches available yet):
 
* Kernel: still missing Linux kernel development (no patches available yet):
** Fix FTRACE: https://patchwork.kernel.org/patch/3554391/
+
** maybe implement transparent huge pages (due to cache coherency technically only possible on PA8500-PA8700 CPUs, not possible on PA8800-PA8900 CPUs)
 
** optimize flush_dcache_page() implementation like sparc. See Documentation/cachetlb.txt, e.g. used in aio subsystem
 
** optimize flush_dcache_page() implementation like sparc. See Documentation/cachetlb.txt, e.g. used in aio subsystem
** Implement CONFIG_DEBUG_STACK_USAGE ?
 
** fix wrong _init notation in kernel
 
 
** NO_IRQ -> should be converted to (0) instead of (-1) -> Helge (check assembly, check in drivers/parisc/*)
 
** NO_IRQ -> should be converted to (0) instead of (-1) -> Helge (check assembly, check in drivers/parisc/*)
** implement alternative coding for UP/SMP. See arch/x86/include/asm/alternative.h
 
 
** check assembly in drivers/parisc/*
 
** check assembly in drivers/parisc/*
 
** use pdc_add_valid() in kern_addr_valid(),  protect against crashable acesses (like for superio-pc-drivers-detection in lp), add pdc_add_valid() to create a probe_kernel_read() implementation.
 
** use pdc_add_valid() in kern_addr_valid(),  protect against crashable acesses (like for superio-pc-drivers-detection in lp), add pdc_add_valid() to create a probe_kernel_read() implementation.
** arch/parisc/kernel/sys_parisc.c -> use SYSCALL_ALIAS() -> maybe
 
** on C8000, report 1 socket with 2 cores.
 
** implement HUGE pages (or even better transparent huge pages)
 
** Review gettimeofday and clock_gettime() implementation, possibly use a light-weight-syscall and rely on cr16 and cpu speed for more accurate timing? similiar to commit http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=18ad51dd342a7eb09dbcd059d0b451b616d4dafc
 
  
 
* Kernel: Low priority patches needs further work  
 
* Kernel: Low priority patches needs further work  
** Fix exception table entries to be of type int (32bit), even on 64bit kernel -> saves space. - https://patchwork.kernel.org/patch/3033801/ - partly done.
 
 
** disable FP-register save/restore at kernel entry? - https://patchwork.kernel.org/patch/3975291/
 
** disable FP-register save/restore at kernel entry? - https://patchwork.kernel.org/patch/3975291/
 
** enable 16k/64k kernel page sizes (still cacheflushing-issues with SCSI driver, additional work in glibc needed to deal with >4k page size, e.g. ld-loader alignments of data/code segments)
 
** enable 16k/64k kernel page sizes (still cacheflushing-issues with SCSI driver, additional work in glibc needed to deal with >4k page size, e.g. ld-loader alignments of data/code segments)
** Superdome support - can someone test? Should work better now with latest kernels.
+
** Superdome support - can someone test? Should work better now with latest kernels (maybe ask Dennis Clarke <dclarke@blastwave.org>, Jan 2019).
** task_struct/thread_info split -- task_struct should not be visible in entry.S, we need to move some items into thread_info -- this includes pt_regs and maybe some of the flags (ptrace, etc)
+
** implement BUG() and WARN() with inline assembly so that interrupt happens in delay branch of "or,<> %r0,cond,%r0". Probably not possible, because gcc will report "control reaches end of non-void function" warnings/errors.
** Visualize FX support (will probably never happen!)
+
 
+
* Debian packaging work:
+
** STARTED: Build real debian-installer CD. See: https://wiki.debian.org/Simple-CDD/Howto
+
** DONE: we need a kernel debian package (3.10 based or higher)
+
** DONE: debian-ports/parisc repository aka. syning debs to there
+
*** DONE: Helge to contact Aurelien (aurel32) on #debian-glibc on OFTC IRC
+
*** DONE: try to debootstrap from parisc-linux.org repository and add missing packages.
+
** DONE: split repository on parisc-linux.org into stable (wheezy) and unstable (sid)
+
** DONE: send patches to remove UP from debian kernels, use sil680 instead of siimage, see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721191 -> fixed in 3.12 / 3.13
+
  
 +
* 64-bit userspace support (from Dave Anglin, Nick Hudson):
 +
** 64-bit userspace, [[Binutils]] 64-bit binutils needs to be fixed to get multiple stub section support.
 +
** glibc port (hppa64 can use the generic thread code)
 +
** 64-bit support in gcc is probably pretty good as 64-bit HP-UX works fine.
 +
** gdb could be a problem due to a lack of a maintainer.
 
* Debian packages / Userspace work
 
* Debian packages / Userspace work
** DONE: qt4-x11: Improve atomic support on parisc (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741190)
 
 
** IMPORTANT: fix OpenJDK - fixes required in zeroport (stack grows up!).
 
** IMPORTANT: fix OpenJDK - fixes required in zeroport (stack grows up!).
** 64-bit userspace, 64-bit binutils needs to be fixed to get multiple stub section support.
 
 
** gcc -> join 32- and 64bit compiler, make "-m64" work, get rid of hppa64-linux-gnu-gcc
 
** gcc -> join 32- and 64bit compiler, make "-m64" work, get rid of hppa64-linux-gnu-gcc
 +
* userspace
 +
** elfutils -- testsuite error
 +
** glib2.0 -- testsuite error
 +
** gtk+3.0 succeeds by adding this to debian/rules: touch testsuite/reftests/color-transition.ui.known_fail testsuite/reftests/linear-gradient-transition-to-other.ui.known_fail
 +
** glibc pthread cancellation: the main issue is the target specific code needed to handle stubs and signal frames.  See linux-unwind.h and hpux-unwind.h in gcc's libgcc/config/pa directory.  The function pa32_fallback_frame_state does the hard work for linux.  Hopefully, the signal tramp hasn't changed. All the unwind tests in gcc pass, so I think the implementation there is okay. It may be we need something similar to pa32_fallback_frame_state in glibc to fix cancellation
 +
** libqb - testsuite error
 +
** DONE: capnproto - testsuite was wrong: PARISC uses mips-floatingpoint NANs - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=781787
 +
** teach "blkid" about palo partition
 +
** STARTED: why is GNU AS so slow, e.g. when building freeorion, quantlib-swig or yade packages, testcases: openturns
 +
*** https://sourceware.org/bugzilla/show_bug.cgi?id=18427
 +
*** http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=787192
 +
** glibc: add backtrace() function, problems when building elfutils package: http://buildd.debian-ports.org/status/package.php?p=elfutils&suite=sid
 +
** gcc: Add _builtin_thread_pointer() and _builtin_set_thread_pointer(), e.g.: https://gcc.gnu.org/ml/gcc-patches/2012-07/msg00428.html  for glibc: ports/sysdeps/hppa/nptl/tls.h __set_cr27()
 +
** provide libphobos packages - gcc-defaults - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=763103,  Work by Dave: https://gcc.gnu.org/ml/gcc-testresults/2018-11/msg03460.html
 +
** debian-cd to use xorriso
 +
** debian-cd: do not compress kernel.
 
    
 
    
* Homepage migration:
 
** DONE: Migration of parisc-linux.org website to https://parisc.wiki.kernel.org
 
** DONE: Migration of wiki.parisc-linux.org website to https://parisc.wiki.kernel.org
 
** DONE: Domain owner before: Matt Taggart <matt@lackof.org>, Expiration Date:09-Aug-2014; Since August 2014 is Helge Deller domain owner of parisc-linux.org
 
** DONE: DNS takeover by Thibaut Varenet on 11/11/2013 - see: http://article.gmane.org/gmane.linux.ports.parisc/5478
 
** DONE: former Server administrator of parisc-linux.org: Dann Frazier - dannf@dannf.org, former technical contact at HP: brett.johnson@hp.com, Since August 2014 administrator/owner: Helge Deller
 
 
 
* palo (PA-RISC Boot Loader):
 
* palo (PA-RISC Boot Loader):
 +
** Fix palo deb package to build iplboot natively (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851792)
 +
** Palo needs better user interaction instead of "0", "1".... Howtos.
 
** Modify (if possible), that palo can read (sequential) tftpbootable-vmlinuxes as well as the current boot-vmlinux images (simplifies build/handling)
 
** Modify (if possible), that palo can read (sequential) tftpbootable-vmlinuxes as well as the current boot-vmlinux images (simplifies build/handling)
** move decompression of Kernel to Linux kernel code instead of palo
 
 
= DONE =
 
* Document news and howto on the parisc-linux website on how to upgrade/install parisc servers
 
** See [[Debian_Ports_Installation]] and [[https://parisc.wiki.kernel.org]]
 
  
== Kernel patches ==
+
== Upstream PA-RISC-related kernel patch history ==
 +
* Kernel 3.8:
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f4ffc3a5398ef9bdbb32db04756d7d34e356fcf unbreak automounter support on 64-bit kernel with 32-bit userspace]
 
* Kernel 3.9:
 
* Kernel 3.9:
 
** Integrate Dave Anglin's latest cacheflush patchset (fixes unusual userspace crashes) https://patchwork.kernel.org/patch/2480891/ - Dave  
 
** Integrate Dave Anglin's latest cacheflush patchset (fixes unusual userspace crashes) https://patchwork.kernel.org/patch/2480891/ - Dave  
Line 156: Line 163:
 
** pa_memcpy() was broken on 64bit (due to gcc miscompiling nonstandard C-code)
 
** pa_memcpy() was broken on 64bit (due to gcc miscompiling nonstandard C-code)
 
* Kernel 3.12:
 
* Kernel 3.12:
** Fix 64bit SMP kernel on HP Visualize J-6750, 32bit SMP does work (Machine owners: Dave Land, Domenico Andreoli) -> fixed in 3.12 and backported >= kernel 2.6.12 (http://git.kernel.org/cgit/linux/kernelgit/torvalds/linux.git/commit/?id=54e181e073fc1415e41917d725ebdbd7de956455)
+
** Fix 64bit SMP kernel on HP Visualize J-6750, 32bit SMP does work (Machine owners: Dave Land, Domenico Andreoli) -> fixed in 3.12 and backported >= kernel 2.6.12 (http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54e181e073fc1415e41917d725ebdbd7de956455)
 
** fix kernel crash when running "echo t > /proc/sysrq-trigger" http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59b33f148cc08fb33cbe823fca1e34f7f023765e
 
** fix kernel crash when running "echo t > /proc/sysrq-trigger" http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59b33f148cc08fb33cbe823fca1e34f7f023765e
 
** regenerate defconfigs to include CONFIG_DEVTMPFS=y and CONFIG_DEVTMPFS_MOUNT=y to avoid udev/initrd problems. Done. http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1b14041aa86800cfd9e21b280b0eaee885fa623
 
** regenerate defconfigs to include CONFIG_DEVTMPFS=y and CONFIG_DEVTMPFS_MOUNT=y to avoid udev/initrd problems. Done. http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1b14041aa86800cfd9e21b280b0eaee885fa623
Line 169: Line 176:
 
** Native types in uapi/asm/stat.h
 
** Native types in uapi/asm/stat.h
 
** '''Dropped HP-UX Support: changed EWOULDBLOCK = EAGAIN -> https://patchwork.kernel.org/patch/3499551/''' (important ABI change!)
 
** '''Dropped HP-UX Support: changed EWOULDBLOCK = EAGAIN -> https://patchwork.kernel.org/patch/3499551/''' (important ABI change!)
 +
** parisc: Make EWOULDBLOCK be equal to EAGAIN on parisc
 
** sticon font problem fixed, sticon now automatically chooses the Linux fb fonts if available instead of using the HP fonts
 
** sticon font problem fixed, sticon now automatically chooses the Linux fb fonts if available instead of using the HP fonts
 +
** '''parisc: add flexible mmap memory layout support'''
 +
** parisc: convert uapi/asm/stat.h to use native types only
 +
** parisc: wire up sched_setattr and sched_getattr
 +
** parisc: fix cache-flushing
 
* Kernel 3.15
 
* Kernel 3.15
** epoll_pwait bug: debian packages libio-epoll-perl and python-falcon failed -> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab3e55b119c9653b19ea4edffb86f04db867ac98
+
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab3e55b119c9653b19ea4edffb86f04db867ac98 epoll_pwait bug: debian packages libio-epoll-perl and python-falcon failed]
** pthread_create() out-of-memory bug, failed only when used with GNU make, e.g. zeromq3 package. Reason: stack hard limit problems -> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b5f3c61d06165c3dddddbc30772f079c2c8589ca
+
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b5f3c61d06165c3dddddbc30772f079c2c8589ca pthread_create() out-of-memory bug, failed only when used with GNU make, e.g. zeromq3 package. Reason: stack hard limit problems]
** parisc: change value of SHMLBA from 0x00400000 to PAGE_SIZE -> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ef36bd2b37815719e31a72d2beecc28ca8ecd26 (backported to v3.13+)
+
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ef36bd2b37815719e31a72d2beecc28ca8ecd26 parisc: change value of SHMLBA from 0x00400000 to PAGE_SIZE] (backported to v3.13+)
 
** parisc: add renameat2 syscall
 
** parisc: add renameat2 syscall
 
** parisc: Improve LWS-CAS performance
 
** parisc: Improve LWS-CAS performance
Line 197: Line 209:
 
** parisc: pdc_stable.c: Cleaning up unnecessary use of memset in conjunction with strncpy
 
** parisc: pdc_stable.c: Cleaning up unnecessary use of memset in conjunction with strncpy
 
** parisc: ptrace: use secure_computing_strict()
 
** parisc: ptrace: use secure_computing_strict()
** parisc: Implement new LWS CAS supporting 64 bit operations, CAS implementation: implement 1,2,4 and 8 byte CAS -> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=89206491201cbd1571009b36292af781cef74c1b (backported to Kernel >= 3.13)  
+
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=89206491201cbd1571009b36292af781cef74c1b parisc: Implement new LWS CAS supporting 64 bit operations, CAS implementation: implement 1,2,4 and 8 byte CAS]  (backported to v3.13+)  
 
** parisc: Wire up seccomp, getrandom and memfd_create syscalls
 
** parisc: Wire up seccomp, getrandom and memfd_create syscalls
 
** parisc: dino: fix %d confusingly prefixed with 0x in format string
 
** parisc: dino: fix %d confusingly prefixed with 0x in format string
Line 203: Line 215:
 
** parisc: Use get_signal() signal_setup_done()
 
** parisc: Use get_signal() signal_setup_done()
 
* Kernel 3.18
 
* Kernel 3.18
** '''parisc: Reduce SIGRTMIN from 37 to 32 to behave like other Linux architectures''' (important ABI change!)
+
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1f25df2eff5b25f52c139d3ff31bc883eee9a0ab '''parisc: Reduce SIGRTMIN from 37 to 32 to behave like other Linux architectures'''] (important ABI change!)
 
** parisc: Avoid using CONFIG_64BIT in userspace exported headers       
 
** parisc: Avoid using CONFIG_64BIT in userspace exported headers       
 
** parisc: Use compat layer for msgctl, shmat, shmctl and semtimedop syscalls (backported to v3.10+)
 
** parisc: Use compat layer for msgctl, shmat, shmctl and semtimedop syscalls (backported to v3.10+)
 
** parisc: Use BUILD_BUG() instead of undefined functions
 
** parisc: Use BUILD_BUG() instead of undefined functions
 
** parisc: Wire up bpf syscall
 
** parisc: Wire up bpf syscall
 
+
* Kernel 3.19
* unsorted:
+
** parisc: fix out-of-register compiler error in ldcw inline assembler function
** DONE: eglibc mmap bug with localedef (see debian bugzilla http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741243)
+
* Kernel 4.0
 +
** parisc: Wire up execveat syscall
 +
** parisc: Add error checks when building up signal trampoline handler
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=04c1614977168fb8f002e2d81f704eeabe0c5ebd '''parisc: hpux - Drop support for HP-UX binaries''']
 +
** parisc: hpux - Do not compile hpux subdirectory
 +
** parisc: hpux - Delete files in hpux subdirectory
 +
** parisc: hpux - Remove hpux gateway page
 +
** parisc: hpux - Remove HPUX syscall numbers
 +
** fs/binfmt_som: Drop kernel support for HP-UX SOM binaries
 +
** parisc/uaccess: fix sparse errors
 +
** parisc: macro whitespace fixes
 +
** parisc: Add compile-time check when adding new syscalls
 +
** parisc: Fix pmd code to depend on PT_NLEVELS value, not on CONFIG_64BIT
 +
** parisc: mm: don't count preallocated pmds
 +
* Kernel 4.1
 +
** parisc: Replace PT_NLEVELS with CONFIG_PGTABLE_LEVELS
 +
** parisc: Eliminate sg_virt_addr() and private scatterlist.h
 +
** parisc: copy_thread(): rename 'arg' argument to 'kthread_arg'
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d045c77c1a69703143a36169c224429c48b9eecd '''parisc,metag: Fix crashes due to stack randomization on stack-grows-upwards architectures''']  (backported to v3.16+)
 +
*** DONE: fix VA randomization regarding to stack limits (testcase: ocaml build, temporarily fix: echo 0 > /proc/sys/kernel/randomize_va_space or add to /etc/sysctl.conf: sys.kernel.randomize_va_space = 0)
 +
** parisc: %pf is only for function pointers
 +
** parisc: copy_thread(): rename 'arg' argument to 'kthread_arg'
 +
* Kernel 4.2
 +
** parisc: don't use module_init for non-modular core pdc_cons code
 +
** parisc: use for_each_sg()
 +
** stifb: Implement hardware accelerated copyarea
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=01ab60570427caa24b9debc369e452e86cd9beb4 parisc: Fix some PTE/TLB race conditions and optimize __flush_tlb_range based on timing results] (backported to v3.18+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c4ac9a48ac512c6b5a6cca06cfad2ad96e8caaa '''parisc: mm: Fix a memory leak related to pmd not attached to the pgd'''] (backported to v4.0+)
 +
* Kernel 4.3
 +
** parisc: Define ioremap_uc and ioremap_wc
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e02a653e15d8d32e9e768fd99a3271aafe5c5d77 '''PCI,parisc: Enable 64-bit bus addresses on PA-RISC''']
 +
** parisc: Additionally check for in_atomic() in page fault handler
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b1b4e435e4ef7de77f07bf2a42c8380b960c2d44 '''parisc: Filter out spurious interrupts in PA-RISC irq handler'''] - fixes crashes due to serial ports at boot on C8000 with PA8900 CPUs (backported to all)
 +
** parisc: Drop CONFIG_SMP around update_cr16_clocksource()
 +
** parisc: Use platform_device_register_simple("rtc-generic")
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1b59ddfcf1678de38a1f8ca9fb8ea5eebeff1843 '''parisc: Use double word condition in 64bit CAS operation'''] - fixes 64bit gcc builtin atomics (backported to all)
 +
* Kernel 4.4
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a01fece2e4185ac173abd16d10304d73d47ebf00 parisc: Change L1_CACHE_BYTES to 16]
 +
** net/xps: Fix calculation of initial number of xps queues
 +
** parisc: reduce syslog debug output
 +
** parisc: serial/mux: Convert to uart_console_device instead of open-coded
 +
** parisc: Wire up userfaultfd syscall
 +
** parisc: allocate sys_membarrier system call number
 +
** parisc: Drop hpux_stat64 struct from stat.h header file
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cf62fb63f760e98244d31396b3b58f3a1e326b '''parisc: Fixes and cleanups in kernel uapi header files'''] (backported to 3.18+)
 +
** parisc: Fix wrong comment regarding first pmd entry flags
 +
** parisc: Drop definition of start_thread_som for HP-UX SOM binaries
 +
** parisc: Drop unused MADV_xxxK_PAGES flags from asm/mman.h
 +
** '''parisc: Add defines for Huge page support'''
 +
** parisc: Initialize the fault vector earlier in the boot process.
 +
** parisc: Increase initial kernel mapping to 32MB on 64bit kernel
 +
** parisc: Use long branch to do_syscall_trace_exit
 +
** '''parisc: Add Huge Page and HUGETLBFS support'''
 +
** parisc: Map kernel text and data on huge pages
 +
** parisc: Remove unused pcibios_init_bus()
 +
** parisc: Wire up mlock2 syscall
 +
** parisc: Disable huge pages on Mako machines
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e46e31a3696ae2d66f32c207df3969613726e636 '''parisc iommu: fix panic due to trying to allocate too large region'''] (backported to all)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=71a71fb5374a23be36a91981b5614590b9e722c3 '''parisc: Fix syscall restarts'''] (backported to all)
 +
* Kernel 4.5
 +
** parisc: Protect huge page pte changes with spinlocks
 +
** parisc: Imporove debug info about space registers and TLB configuration
 +
** parisc: Drop parisc-specific NSIGTRAP define
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e60fc5aa608eb38b47ba4ee058f306f739eb70a0 '''parisc: Fix __ARCH_SI_PREAMBLE_SIZE'''] (backported to all)
 +
** parisc: Reduce overhead of parisc_requires_coherency()
 +
** parisc: Initialize PCI bridge cache line and default latency  (related to https://patchwork.kernel.org/patch/7738911/)
 +
** parisc: Use parentheses around expression in floppy.h
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=98e8b6c9ac9d1b1e9d1122dfa6783d5d566bb8f7 '''parisc: Fix ptrace syscall number and return value modification'''] (backported to v4.0+)
 +
** parisc: Wire up copy_file_range syscall
 +
* Kernel 4.6
 +
** parisc: Panic immediately when panic_on_oops
 +
** parisc: Drop alloc_hugepages and free_hugepages syscalls
 +
** parisc,metag: Implement CONFIG_DEBUG_STACK_USAGE option
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0de798584bdedfdad19db21e3c7aec84f252f4f3 parisc: Use generic extable search and sort routines]
 +
** parisc: Wire up preadv2 and pwritev2 syscalls
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4f4acc9472e54ce702f1d85fc9e6d57767dec91f parisc: Fix SIGSYS signals in compat case] (backported to v4.5)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=910cd32e552ea09caa89cdbe328e468979b030dd parisc: Fix and enable seccomp filter support] (backported to v4.5)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=592570c950fb455226cd255603de7cede2be83e6 parisc: Handle R_PARISC_PCREL32 relocations in kernel modules]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e3893027a300927049efc1572f852201eb785142 '''parisc: Avoid function pointers for kernel exception routines'''] - backported to all
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ef72f3110d8b19f4c098a0bff7ed7d11945e70c6 '''parisc: Fix kernel crash with reversed copy_from_user()'''] - backported to all
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2ef4dfd9d9f288943e249b78365a69e3ea3ec072 '''parisc: Unbreak handling exceptions from kernel modules'''] - backported to all
 +
** parisc: Update comment regarding relative extable support
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=366dd4ea9d5f0eb78fdf4982d76506f99480ec0a '''parisc: Fix ftrace function tracer'''] (not backported, maybe it should have been?)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f0b22d1bb2a37a665a969e95785c75a4f49d1499 parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls] (backported to v4.0+)
 +
* Kernel 4.7
 +
** parisc: Fix typo in pdc.h
 +
** parisc: Fix typo in ldcw.h
 +
** parisc: Fix typos in eisa_eeprom.h
 +
** parisc: Fix typo in fpudispatch.c
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fc79168a7c75423047d60a033dc4844955ccae0b parisc: Add syscall tracepoint support]
 +
** parisc: Simplify and speed up get_user() and put_user()
 +
** parisc: Add 64bit get_user() and put_user() for 32bit kernel
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=64e2a42bca12e408f0258c56adcf3595bcd116e7 parisc: Add ARCH_TRACEHOOK and regset support]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54b668009076caddbede8fde513ca2c982590bfe '''parisc: Add native high-resolution sched_clock() implementation''']
 +
** parisc: Merge ftrace C-helper and assembler functions into .text.hot section
 +
** parisc: Use long jump to reach ftrace_return_to_handler()
 +
** parisc: Whitespace cleanups in unistd.h
 +
** parisc: Update futex.h to match generic implementation
 +
** parisc: Fix printk time during boot
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b78f260887df532da529f225c49195d18fef36b parisc: Fix pagefault crash in unaligned __get_user() call] - backported to all
 +
** parisc: Move die_if_kernel() prototype into traps.h header
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=be24a89700eef61bedaba40f3b05ef07f5806e38 parisc: Fix backtrace on PA-RISC]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8beb330044d0d1878c7b92290e91c0b889e92633 '''53c700: fix BUG on untagged commands'''] - fixes SCSI on 712/715 machines with sym7xx driver (backported to 4.6)
 +
* Kernel 4.8
 +
** parisc: Change structure intialisation to C99 style in iomap.c
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=773e1c5fa4bf1faa25e119490b26ece2ef1bdb46 parisc: Add <asm/hash.h>]
 +
** parisc: Add break statements to pdc_pat_io_pci_cfg_read()
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ae141830b118c3fb5b7eab6fa7c8ab7b7224b0a4 '''parisc: Fix automatic selection of cr16 clocksource'''] (backported to 4.7)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3eb53b20d7bd1374598cfb1feaa081fcac0e76cd '''parisc: Fix order of EREFUSED define in errno.h'''] (backported to all)
 +
* Kernel 4.9
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=690d097c00c88fa9d93d198591e184164b1d8c20 '''parisc: Increase KERNEL_INITIAL_SIZE for 32-bit SMP kernels'''] (backported to 4.4+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4fe9e1d957e45ad8eba9885ee860a0e93d13a7c7 parisc: Drop bootmem and switch to memblock]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e91db6b4abecd58647a5e984d538187f1c2ea09 parisc: Add hardened usercopy feature]
 +
** parisc: Add cfi_startproc and cfi_endproc to assembly code
 +
** parisc: Move hpmc stack into page aligned bss section
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=92420bd0d01f040bbf754e1d090be49ca6a1c8d6 '''parisc: Fix self-detected CPU stall warnings on Mako machines'''] (backported to 4.7+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b391667eb45a5a888bc9372462c5f647418c31af parisc: Report trap type as human readable string]
 +
** parisc: Update comment regarding implementation of copy_user_page_asm
 +
** parisc: Use kmalloc_array() in add_system_map_addresses()
 +
** parisc: Check return value of smp_boot_one_cpu()
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b5d5cf2b8a68618a8ec646cab5746e2f539dc244 parisc: Drop BROKEN_RODATA config option]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=65bf34f59594c11f13d371c5334a6a0a385cd7ae '''parisc: Increase initial kernel mapping size'''] (backported to v4.4+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f8850abb7ba68229838014b3409460e576751c6d '''parisc: Fix kernel memory layout regarding position of __gp'''] (backported to v4.4+)
 +
** parisc: Move exception table into read-only section
 +
** parisc: Zero-initialize newly alloced memblock
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a862485f42af7df530b0b5f0e5ba8ffbb3a4a12 parisc: Show trap name in kernel crash]
 +
** parisc: Migrate exception table users off module.h and onto extable.h
 +
** parisc: use KERN_CONT when printing device inventory
 +
** parisc: Use LINUX_GATEWAY_ADDR define instead of hardcoded value
 +
** parisc: Ignore the pkey system calls for now
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f4125cfdb3008363137f744c101e5d76ead760ba '''parisc: Avoid trashing sr2 and sr3 in LWS code''']
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6ed518328d0189e0fdf1bb7c73290d546143ea66 '''parisc: Ensure consistent state when switching to kernel stack at syscall entry'''] (backported to all)
 +
** parisc: Fix printk continuations in system detection
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=43b1f6abd59063a088416a0df042b36450f91f75 '''parisc: Switch to generic sched_clock implementation'''] (backported to v4.7+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=741dc7bf1c7c7d93b853bb55efe77baa27e1b0a9 '''parisc: Fix races in parisc_setup_cache_timing()'''] (backported to v3.18+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c0452fb9fb8f49c7d68ab9fa0ad092016be7b45f '''parisc: Fix race in pci-dma.c'''] (backported to v3.16+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5035b230e7b67ac12691ed3b5495bbb617027b68 '''parisc: Also flush data TLB in flush_icache_page_asm'''] (backported to v3.16+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=24d0492b7d5d321a9c5846c8c974eba9823ffaa0 parisc: Fix TLB related boot crash on SMP machines] (backported to v3.18+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c78e710c1c9fbeff43dddc0aa3d0ff458e70b0cc parisc: Purge TLB before setting PTE] (backported to v3.16+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=febe42964fe182281859b3d43d844bb25ca49367 parisc: Remove unnecessary TLB purges from flush_dcache_page_asm and flush_icache_page_asm] (backported to v3.16+)
 +
* Kernel 4.10
 +
** parisc: perf: return -EFAULT on error
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=18d98a79382cbe5a7569788d5b7b18e7015506f2 parisc: Enable KASLR]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c38602d83e584047906b41b162ababd4db4106d parisc: Re-enable interrupts early]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=637250cc8f5e2bfc5c3a96802d1d96b4987a1d62 parisc: Enhance CPU detection code on PAT machines]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=160494d381373cfa21208484aea4e5db2d3cb0a8 parisc: Optimize timer interrupt function]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=41744213602a206f24adcb4a2b7551db3c700e72 '''parisc: Mark cr16 clocksource unstable on SMP systems'''] (backported to v4.8+)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1fe0a7e0bc52024a445945c9e7691551aba97390 parisc: Drop TIF_RESTORE_SIGMASK and switch to generic code]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a9eb4cd5966c8aad3d007d206a2cbda97d6928 parisc: Add line-break when printing segfault info] (backported to v4.9)
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=83b5d1e3d3013dbf90645a5d07179d018c8243fa parisc, parport_gsc: Fixes for printk continuation lines]
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2ad5d52d42810bed95100a3d912679d8864421ec '''parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header'''] (backported to all, build-fix for qemu)
 +
* Kernel 4.11
 +
** parisc: eisa: Remove coding style errors
 +
** parisc: eisa: Fix resource leaks in error paths
 +
** parisc: ccio-dma: Handle return NULL error from ioremap_nocache
 +
** parisc: fix a printk
 +
** parisc: Define access_ok() as macro
 +
** [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ef470a60e10eb12635d7b84c9502cea3028d44e8 parisc: Remove flush_user_dcache_range and flush_user_icache_range]
 +
** parisc: perf: Fix potential NULL pointer dereference
 +
** parisc: Wire up statx system call
 +
** parisc: Avoid compiler warnings with access_ok()
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=73580dac7618e4bcd21679f553cf3c97323fec46 parisc: Fix system shutdown halt]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=316ec0624f951166daedbe446988ef92ae72b59f parisc: Optimize flush_kernel_vmap_range and invalidate_kernel_vmap_range]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f655322b1ba4bd46e26e307d04098f9c84df764 parisc: support R_PARISC_SECREL32 relocation in modules] (backported to v4.10+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=554bfeceb8a22d448cd986fc9efce25e833278a1 '''parisc: Fix access fault handling in pa_memcpy()'''] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=554bfeceb8a22d448cd986fc9efce25e833278a1 '''parisc: Clean up fixup routines for get_user()/put_user()'''] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=476e75a44b56038bee9207242d4bc718f6b4de06 parisc: Avoid stalled CPU warnings after system shutdown] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=409c1b250e30ad0e48b4d15d7319b4e18c046c4f '''parisc: fix bugs in pa_memcpy'''] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f795cef0ecdf9bc980dd058d49bdab4b19af1d3 '''parisc: Fix get_user() for 64-bit value on 32-bit kernel'''] (backported to v4.9+)
 +
* Kernel 4.12
 +
** (none beside backports, pull request was too late during merge window)
 +
* Kernel 4.13
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b0f94efd5aa8daa8a07d7601714c2573266cd4c9 '''parisc: use compat_sys_keyctl()'''] (backported to all)
 +
** parisc: Inline trivial exception code in lusercopy.S
 +
** parisc: Drop per_cpu uaccess related exception_data struct
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c8c3735997a3aa184fa81742bb6c4062a26af2f3 '''parisc: Enhance detection of synchronous cr16 clocksources''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c9c2877d08d9aa0ca0a5c227ac795fbb76269300 '''parisc: Add Page Deallocation Table (PDT) support''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=649aa24254e85bf6bd7807dd372d083707852b1f '''parisc/mm: Ensure IRQs are off in switch_mm()'''] (backported to  v4.7+)
 +
** parisc: Avoid zeroing gr[0] in fixup_exception()
 +
** parisc: Don't hardcode PSW values in gsc_*() functions
 +
** parisc: Don't hardcode PSW values in hpmc code
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=247462316f85a9e0479445c1a4223950b68ffac1 '''parisc: Report SIGSEGV instead of SIGBUS when running out of stack'''] (backported to all, fixes libsigsegv package)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=33f9e02495d15a061f0c94ef46f5103a2d0c20f3 '''parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs'''] (backported to v3.13+, fixes parport_pc module crash)
 +
** parisc: ->mapping_error
 +
** parisc: pdc_stable: constify attribute_group structures.
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5bc64bd246ca00e0bb0b7137afaf586f2f66a911 '''parisc: Disable further stack checks when panic occurs during stack check''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6cd819e8e978b361ae558056a9e79fd30e6acb0d parisc: Merge millicode routines via linker script]
 +
** parisc: regenerate defconfig files
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f520e55241e1cf0c10d308ccf47513f28533f60a parisc: Fix crash when calling PDC_PAT_MEM PDT firmware function]
 +
** parisc: Add function to return DIMM slot of physical address
 +
** parisc: Show DIMM slot number which holds broken memory module
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=56188832a50f09998cb570ba3771a1d25c193c0e '''parisc: Suspend lockup detectors before system halt'''] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ae7a609c34b6fb12328c553b5f9aab26ae74a28e '''parisc: Prevent TLB speculation on flushed pages on CPUs that only support equivalent aliases'''] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=56008c04ebc099940021b714da2d7779117cf6a7 parisc: Extend disabled preemption in copy_user_page]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=74ad3d28af2104b92dd83a43add79e6a8c45d8e2 parisc: Define CONFIG_CPU_BIG_ENDIAN]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8f8201dfed91a43ac38c899c82f81eef3d36afd9 '''parisc: Increase thread and stack size to 32kb'''] (backported to v4.11+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93964fd4ea6ab86a2d2853a9ae56ae0c24cbbe16 parisc: pdc_stable: Fix locking when creating sysfs links]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13d57093c141db2036364d6be35e394fc5b64728 '''parisc: Handle vma's whose context is not current in flush_cache_range'''] (backported to v4.9+)
 +
** printk-formats.txt: Better describe the difference between %pS and %pF
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4098116039911e8870d84c975e2ec22dab65a909 '''parisc: pci memory bar assignment fails with 64bit kernels on dino/cujo'''] (backported to all)
 +
* Kernel 4.14
 +
** parisc: Add MADV_HWPOISON and MADV_SOFT_OFFLINE
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8a5aa00e6b9630d36d7681b38062a3d48d8b6ee6 '''parisc: PDT/firmware: Add support to read PDT on older PAT-machines''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54ac8fcbd6e6777929235ac767467991005d2df3 '''parisc: PDT: Add full support for memory failure via Page Deallocation Table (PDT)''']
 +
** parisc: Static initialization of spinlocks in perf and unwind code
 +
** parisc: Drop exception_data struct
 +
** parisc: Static initialization of pcxl_res_lock spinlock
 +
** parisc: Drop MADV_SPACEAVAIL, MADV_VPS_PURGE and MADV_VPS_INHERIT
 +
** parisc/random: Add machine specific randomness
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e35a2ce692821563583fa8b11ddf4acb24e54580 '''parisc: Enable UBSAN support''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2f3c7b8137ef6a3f90850d7cb5dbd05d8940403a '''parisc: Add core code for self-extracting kernel''']
 +
** parisc: Make existing core files reuseable for bootloader
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b6adc16e08e0ee8bbc9cccf7af3882b6e1cb30c2 '''parisc: Wire up support for self-extracting kernel''']
 +
** parisc/harmony: Fix section mismatches
 +
** parisc/sticore: Fix section mismatches
 +
** parisc/mux: Fix section mismatches
 +
** parisc/8250_gsc: Fix section mismatches
 +
** parisc/scsi/zalon: Fix section mismatches
 +
** parisc/scsi/lasi700: Fix section mismatches
 +
** parisc/parport_gsc: Fix section mismatches
 +
** parisc: Fix section mismatches in parisc core drivers
 +
** parisc/serio: Fix section mismatches in gscps2 and hp_sdc drivers
 +
** parisc/net/lasi_82596: Fix section mismatches
 +
** parisc/input/hilkbd: Fix section mismatches
 +
** parisc/ipmi_si_intf: Fix section mismatches on parisc platform
 +
** parisc/core: Fix section mismatches
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d81f734462d439291531266c4004ab97e9a033cc '''parisc: Fix up devices below a PCI-PCI MegaRAID controller bridge''']
 +
** printk-formats.txt: Add examples for %pF and %pS usage
 +
** parisc: Optimize switch_mm
 +
** parisc: Fix too large frame size warnings
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e77900abfd8be4e207412d8b7752dbb9838e2571 parisc: Stop unwinding at start of stack]
 +
** parisc: Move start_parisc() into init section
 +
** parisc: Add wrapper for pdc_instr() firmware function
 +
** parisc: Add PDCE_CHECK instruction to HPMC handler
 +
** parisc: Check if initrd was loaded into broken RAM
 +
** parisc: Move init_per_cpu() into init section
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=606f95e4255845155f62504a9e1f12665b1853c8 '''parisc: Add HWPOISON page fault handler code''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=af21b01d1166248f282fc02d0f459c94de06615e '''parisc: Reintroduce option to gzip-compress the kernel''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8c031ba63f8f2a9efc471cb45b2ff18271556544 '''parisc: Unbreak bootloader due to gcc-7 optimizations''']
 +
** parisc: Export __cmpxchg_u64 unconditionally
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8642b31ba9eef8a01845146a26682d4869e62513 '''parisc: Fix detection of nonsynchronous cr16 cycle counters'''] (backported to v4.13+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=374b3bf8e8b519f61eb9775888074c6e46b3bf0c '''parisc: Fix double-word compare and exchange in LWS code on 32-bit kernels'''] (backported to all/v3.13+)
 +
* Kernel 4.15
 +
** arch: Fix duplicates in Kconfig for parisc and sparc
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc5a768e567df51f43778da381477f6555f3824c parisc: Make some PDC structures accessible in uapi headers]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3744d988c05a27f40408003352841aefadba1324 parisc: Pass endianness info to sparse]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bf7b4c1b3c92f246a535a7c792177041d0442011 '''parisc: Add CPU topology support''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=05f016d2ca7a4fab99d5d5472168506ddf95e74f '''parisc: Fix validity check of pointer size argument in new CAS implementation'''] (backported to all/v3.13+)
 +
** parisc: Fix indenting in puts() (backported to v4.14)
 +
** parisc: Align os_hpmc_size on word boundary (backported to v4.14)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bcf3f1752a622f1372d3252d0fea8855d89812e7 '''parisc: Hide Diva-built-in serial aux and graphics card'''] (backported to all/v3.0+) - '''important for rp3410/rp3440 machines'''
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9352aeada4d8d8753fc0e414fbfe8fdfcb68a12c '''Revert "parisc: Re-enable interrupts early"'''] (backported to v4.10+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=da57c5414f49ef9e4bcb9ae0bbafd1d650b31411 '''parisc: Reduce thread stack to 16 kb''']
 +
** parisc: remove duplicate includes
 +
** parisc: Show unhashed hardware inventory
 +
** parisc: Show initial kernel memory layout unhashed
 +
** parisc: Show unhashed HPA of Dino chip
 +
** parisc: Show unhashed EISA EEPROM address
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=88776c0e70be0290f8357019d844aae15edaa967 '''parisc: Fix alignment of pa_tlb_lock in assembly on 32-bit SMP kernel''']  (backported to v4.0+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=310d82784fb4d60c80569f5ca9f53a7f3bf1d477 '''parisc: qemu idle sleep support''']  (backported to v4.9+)
 +
* Kernel 4.16
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fd8d0ca2563151204f3fe555dc8ca4bcfe8677a3 parisc: Hide virtual kernel memory layout] (backported to v4.15)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ed1fe4ad394e54783bbffa84102faf435661a2e parisc: Check if secondary CPUs want own PDC calls]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5ffa8518851f1401817c15d2a7eecc0373c26ff9 parisc: Use cr16 interval timers unconditionally on qemu] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=636a415bcc7f4fd020ece8fd5fc648c4cef19c34 parisc: Reduce irq overhead when run in qemu] (backported to v4.14+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0adb24e03a124b79130c9499731936b11ce2677d '''parisc: Fix ordering of cache and TLB flushes'''] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9ef0f88fe5466c2ca1d2975549ba6be502c464c1 '''parisc: Handle case where flush_cache_range is called with no context'''] (backported to v4.9+)
 +
* Kernel 4.17
 +
** parisc: Silence uninitialized variable warning in dbl_to_sgl_fcnvff()
 +
** parisc/stifb: Use fb_memset() to avoid sparse warning
 +
** parisc/parport_gsc: Use NULL to avoid sparse warning
 +
** parisc/led: Fix sparse warnings
 +
** parisc/gscps2: Fix sparse warnings
 +
** parisc: Force to various endian types for sparse
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d5b59a71204b0a9a55eda633347b1214642bead3 '''parisc: Convert MAP_TYPE to cover 4 bits on parisc''']
 +
** parisc: Move various functions and strings to init section
 +
** parisc/Kconfig: SMP kernels boot on all machines
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24002d59376e2d19a2a523fe88d5b32e691a43af '''parisc: machine_power_off() should call pm_power_off()''']
 +
** parisc: Directly call machine_power_off() in power button driver
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d5654e156bc4d68a87bbaa6d7e020baceddf6e68 '''parisc: Fix HPMC handler by increasing size to multiple of 16 bytes''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b845f66f78bf42a4ce98e5cfe0e94fab41dd0742 '''parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode'''] (backported to all kernels: 3.18.111 4.4.134 4.9.104 4.14.45 4.16.13 4.17)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a77ab0e7ce232a62adac3d85b9ae66d0f48385ac '''parisc: Add code generator for Qemu/SeaBIOS machine info''']
 +
** parisc: Fix out of array access in match_pci_device()
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c6185e285c5c7cfeab739bae7f206ced695f09c7 '''ipmi/parisc: Add IPMI chassis poweroff for certain HP PA-RISC and IA-64 servers''']
 +
** parisc/signal: Add FPE_CONDTRAP for conditional trap handling
 +
** parisc: Move cache flush functions into .text.hot section
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71d577db01a5177c7807a2f3d3df9bab9d21c500 parisc: Switch to generic COMPAT_BINFMT_ELF]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67698287031be7c1821f9b151237ca8cdb231fd1 parisc: Prevent panic at system halt]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f76cdd00ef0e39d880139b074e3b247594dff95a parisc: time: Convert read_persistent_clock() to read_persistent_clock64()]
 +
** parisc: Make bzImage default build target
 +
** parisc: Document rules regarding checksum of HPMC handler
 +
** parisc: drivers.c: Fix section mismatches
 +
** parisc: Fix section mismatches
 +
* Kernel 4.18
 +
** parisc: Convert printk(KERN_LEVEL) to pr_lvl()
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=704e38303153c797d66c41bbe8325202f549b53c parisc: Drop struct sigaction from not exported header file]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1c971f39e62222d567f179ccaa1a186f1c203b52 parisc: Mark 16kB and 64kB page sizes BROKEN]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=435d34c7a48de5e89047ef9c7dce6528831b258b parisc: Default to 4 SMP CPUs]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2765b3edc41bdf18960ca7e6b656fb933ac191d6 parisc: Wire up io_pgetevents syscall]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=63ba82c0e63f1dd400d84e12f2142c2cb691aec1 parisc: Reduce debug output in unwind code]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24b6c22504a27210a8377e54d24d425ae414f2c1 parisc: Build kernel without -ffunction-sections]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66509a276c8c1d19ee3f661a41b418d101c57d29 parisc: Enable CONFIG_MLONGCALLS by default]  (backported to v4.0+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fedb8da96355f5f64353625bf96dc69423ad1826 '''parisc: Define mb() and add memory barriers to assembler unlock sequences''']  (backported to v4.0+)
 +
* Kernel 4.19
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a34a9b9682a5a9de53386ed0872c7d38ca9d6b38 parisc: merge pcx_dma_ops and pcxl_dma_ops]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f1501053811414ddeff63db8f5d41bdbe38068f parisc: always use flush_kernel_dcache_range for DMA cache maintainance]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1f59375b3782f478ac2c488889abdc00dd8e25f '''parisc: use generic dma_noncoherent_ops''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93cb8e20d56be40c541475f77b5f565fbb385a4b '''parisc: Drop architecture-specific ENOTSUP define''']
 +
** parisc: Add HAVE_REGS_AND_STACK_ACCESS_API feature
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c8921d72e390cb6fca3fb2b0c2badfda851647eb '''parisc: Fix and improve kernel stack unwinding''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7797167ffde1f00446301cb22b37b7c03194cfaf '''parisc: Remove ordered stores from syscall.S'''] (backported to v4.0+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3b885ac1dc35b87a39ee176a6c7e2af9c789d8b8 '''parisc: Remove unnecessary barriers from spinlock.h'''] (backported to v4.0+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4a53ec1ccf932f86845c96a5092ba4507621c84d parisc: prefer _THIS_IP_ and _RET_IP_ statement expressions]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5b00ca0b8035e49ef7c466e959c5cb457a654351 '''parisc: Restore possibility to execute 64-bit applications''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b6fc0cccb6b35815a7d1cfc9279cdbfc2c61d00d '''parisc: Fix ptraced 64-bit applications to call 64-bit syscalls''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54c770da992387abfa7df4817404d000ef034fa8 parisc: Update comments in syscall.S regarding wide userland]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9e0d5c451f9e559dd06af3fff49a0d2068c634c4 parisc: Consolidate unwind initialization calls]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8801ccb9fa524c195322c26b6d44e99827772bde '''parisc: Fix boot failure of 64-bit kernel''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dbf2a4b1ffab2867505be3b24221d5efa2200c91 parisc: Add hardware description to stack traces]
 +
** parisc: Fix uninitialized variable usage in unwind.c
 +
* Kernel 4.20
 +
** parisc: remove the dead ccio-rm-dma driver
 +
** parisc: Use PARISC_ITLB_TRAP constant in entry.S
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fe8376dbbd6ac1febb0fd6389e3ec4f349e70c71 parisc: Add SYSTEM_INFO and REGISTER TOC PAT functions]
 +
** parisc: Clean up crash header output
 +
** parisc: dino: Utilize DINO_MASK_IRQ() macro
 +
** parisc: Ratelimit dino stuck interrupt warnings
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c229b3f2dd8133f61bb81d3cb018be92f4bba39 '''parisc: Fix map_pages() to not overwrite existing pte entries'''] (backported to all)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=99a3ae51d557d8e38a7aece65678a31f9db215ee '''parisc: Fix exported address of os_hpmc handler'''] (backported to 4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=db139d71c4c377c56a67ae219f120186ce9934d1 '''extract-vmlinux: Check for uncompressed image as fallback''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34c201ae49fe9e0bf3b389da5869d810f201c740 parisc: Include compressed vmlinux file in vmlinuz boot kernel]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3847dab77421867fbc77faacb2f377d44e729e1b '''parisc: Add alternative coding infrastructure''']
 +
** parisc: Use zdep for shlw macro on PA1.1 and PA2.0
 +
** parisc: Drop two instructions from pte lookup code
 +
** parisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functions
 +
** parisc: Retrieve and display the PDC PAT capabilities
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a886c9791aed64d73f8c0038cc1506741ba216fa '''parisc: Reorder TLB flush timing calculation''']
 +
** parisc: Remove PTE load and fault check from L2_ptep macro
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d27dfa13b9f77ae7e6ed09d70a0426ed26c1a8f9 '''parisc: Release spinlocks using ordered store''']
 +
** parisc: Purge TLB entries after updating page table entry and set page accessed flag in TLB handler
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1138b6718ff74d2a934459643e3754423d23b5e2 '''parisc: Fix address in HPMC IVA'''] (backported to all)
 +
** parisc: Remove pte_inserted define
 +
** parisc: Optimze cache flush algorithms
 +
** parisc: remove check for minimum required GCC version
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c9fa406f62ec952bc4689b5120a02759ce42a68d parisc: Fix A500 boot crash]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=87613bb9d20c556b5eeae04f4caf40701189f07b parisc: Use LINUX_GATEWAY_SPACE constant in entry.S]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9a298b445514b3de08252c71833f9273b7727355 '''parisc64: change __kernel_suseconds_t to match glibc''']
 +
** parisc: Revert "Release spinlocks using ordered store"
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?h=parisc-4.20-4&id=1e8249b8a4e960018e4baca6b523b8a4500af600 parisc: Enable -ffunction-sections for modules on 32-bit kernel] (backported to v4.18+)
 +
* Kernel 5.0
 +
** parisc: move __IGNORE* entries to non uapi header
 +
** parisc: add __NR_syscalls along with __NR_Linux_syscalls
 +
** parisc: remove __NR_Linux from uapi header file.
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=85e69701f58c9b2ec2975e31518b60e056bfebdf '''parisc: add system call table generation support''']
 +
** parisc: generate uapi header and system call table files
 +
** parisc: syscalls: ignore nfsservctl for other architectures
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8cc28269b9574103aae9088a02a20929ec75f983 parisc: Split out alternative live patching code]
 +
** parisc: Fix serio address output
 +
** parisc: Fix HP SDC hpa address output
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dfbaecb2b707cfdc5276b548d52b437384bd6483 '''parisc: Remap hugepage-aligned pages in set_kernel_text_rw()'''] (backported to 4.20)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b7dc5a071ddf69c0350396b203cba32fe5bab510 '''parisc: Fix ptrace syscall number modification'''] (backported to 4.5+)
 +
** CREDITS/MAINTAINERS: Retire parisc-linux.org email domain
 +
* Kernel 5.1
 +
** parisc: don't include <asm/cacheflush.h> in <asm/dma-mapping.h>
 +
** parisc: move internal implementation details out of <asm/dma-mapping.h>
 +
** parisc: turn GET_IOC into an inline function
 +
** parisc: properly type the iommu field in struct pci_hba_data
 +
** parisc: properly type the return value of parisc_walk_tree
 +
** parisc/dino: use container_of in DINO_DEV
 +
** parisc/lba_pci: use container_of in LBA_DEV
 +
** parisc: remove the HBA_DATA macro
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=81fe5bba88a3fbe34ee6c5d18e327c6aaacd588c '''parisc: Hide built-in serial aux port of Tosca GSP card''']
 +
** parisc: Show rescheduling interrupts on SMP machines only
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b102f29b2d8603f15071384e88125b8eab5f8faa '''parisc: Count IPI function call interrupts''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f73493eb4aecdd6edd8a749890e6e2dcfa0a7978 '''parisc: Improve initial IRQ to CPU assignment''']
 +
** parisc: Use F_EXTEND() macro in iosapic code
 +
** parisc: Add constants for PDC_RELOCATE PDC call
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8207d4ee44d3f525bf9aa57807ac9db5d0d90c1a '''parisc: Show machine product number during boot''']
 +
** parisc: Add constant for PDC_PAT_COMPLEX firmware call
 +
** parisc: Add constants for various PDC firmware calls
 +
** parisc: remove meaningless ccflags-y in arch/parisc/boot/Makefile
 +
** parisc: use memblock_alloc() instead of custom get_memblock()
 +
** parisc: replace oops_in_progress manipulation with bust_spinlocks()
 +
** parisc: Add PDC_CRASH_PREP PDC function number
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c2f8d7cb32cd95e3005bed58ce02afa686b9f357 Revert: parisc: Use F_EXTEND() macro in iosapic code]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d006e95b5561f708d0385e9677ffe2c46f2ae345 '''parisc: Detect QEMU earlier in boot process'''] (backported to v4.9+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=45efd871bf0a47648f119d1b41467f70484de5bc '''parisc: regs_return_value() should return gpr28'''] (backported to v4.14+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f324fa58327791b2696628b31480e7e21c745706 '''parisc: also set iaoq_b in instruction_pointer_set()'''] (backported to v4.19+)
 +
* Kernel 5.2
 +
**  parisc: Consider stack randomization for mmap base only when necessary
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e1120f4b57bc12437048494ab56648edaa5b57d parisc: Export running_on_qemu symbol for modules] (backported to v4.9+)
 +
**  parisc: Tune LASI LAN for QEMU
 +
**  parisc: Skip registering LED when running in QEMU (backported to v4.9+)
 +
**  parisc: PA-Linux requires at least 32 MB RAM
 +
**  parisc: Show n/a if product number not available
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dbdf0760990583649bfaca75fd98f76afd5f3905 '''parisc: Switch from DISCONTIGMEM to SPARSEMEM''']
 +
**  parisc: Add memory barrier to asm pdc and sync instructions (backported to v4.20+)
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d19a12906e5e558c0f6b6cfece7b7caf1012ef95 parisc: Allow live-patching of __meminit functions] (backported to v4.20+)
 +
**  parisc: Rename LEVEL to PA_ASM_LEVEL to avoid name clash with DRBD code (backported to all)
 +
**  parisc: Use PA_ASM_LEVEL in boot code (backported to v4.14+)
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62217beb394e654bbd2bb87c533dadd2d8bf62c6 '''parisc: Add static branch and JUMP_LABEL feature''']
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6c63ef80014b60ab13bee7e683d0a95521bb7fdd '''parisc: Remove lock code to serialize TLB operations in pacache.S''']
 +
**  parisc: Use ldcw instruction for SMP spinlock release barrier
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=44224bdb99150ad17cf394973b25736cb92c246a parisc: Add memory clobber to TLB purges] (backported to v4.20+)
 +
**  parisc: Update huge TLB page support to use per-pagetable spinlock
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b37d1c1898b288c69f3dc9267bc2c41af06f4a4b '''parisc: Use per-pagetable spinlock''']
 +
**  parisc: add set_fixmap()/clear_fixmap()
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=620a53d522ba007a79fffc444bd75e8d3775f5b8 '''parisc: add parisc code patching''']
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eacbfce19d8b6dbd7958cbe01d65a21324cc2fad '''parisc: add KGDB support''']
 +
**  parisc: add functions required by KPROBE_EVENTS
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8858ac8e9e9b1894f7bb218bc0035532371b8d7e '''parisc: Implement kprobes''']
 +
**  parisc: remove kprobes.h from generic-y
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e0b59b7b633ab72c08bb9bac36afaeaade011ddf '''parisc: Implement kretprobes''']
 +
**  doc: update kprobes supported architecture list
 +
**  parisc: remove unused flags parameter in __patch_text()
 +
**  parisc: update feature lists
 +
**  parisc: enable wide mode early
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6eb5fe9123f05dcbf339ae5c0b6d32fcc0685d5 parisc: Drop LDCW barrier in CAS code when running UP]
 +
**  [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8d0e051cc75e2b1a7e2fd51fc56af332c9619618 parisc: Enable the ro_after_init feature]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=200036a8e802dee09103031eeeaea91dd212ec99 '''parisc: Allow building 64-bit kernel without -mlong-calls compiler option''']
 +
** parisc: Fix compiler warnings in float emulation code
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=527a1d1ede98479bf90c31a64822107ac7e6d276 '''parisc: Fix crash due alternative coding for NP iopdir_fdc bit''']  (backported to v5.0+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=63923d2c3800919774f5c651d503d1dd2adaddd5 '''parisc: Use implicit space register selection for loading the coherence index of I/O pdirs'''] (backported to all)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=116d753308cf032159c7b7aa87c9605bb5354784 '''parisc: Use lpa instruction to load physical addresses in driver code''']
 +
** parisc: configs: Remove useless UEVENT_HELPER_PATH
 +
** parisc: Kconfig: remove ARCH_DISCARD_MEMBLOCK
 +
** parisc/slab: cleanup after /proc/slab_allocators removal
 +
** parisc: Fix module loading error with JUMP_LABEL feature
 +
* Kernel 5.3
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ca6366220ed285e29ee22f4cf5c68a0397cb005 '''parisc: add dynamic ftrace''']
 +
** compiler.h: add CC_USING_PATCHABLE_FUNCTION_ENTRY
 +
** parisc: add support for patching multiple words
 +
** parisc: add spinlock to patch function
 +
** parisc: add WARN_ON() to clear_fixmap
 +
** parisc: use pr_debug() in kernel/module.c
 +
** parisc: asm: psw.h: missing header guard
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=10835c854685393a921b68f529bf740fa7c9984d '''parisc: Fix kernel panic due invalid values in IAOQ0 or IAOQ1'''] (backported to all)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34c32fc603311a72cb558e5e337555434f64c27b '''parisc: Ensure userspace privilege for ptraced processes in regset functions'''] (backported to 4.7+)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=59a783dbc0d5fd6792aabff933055373b6dcbf2a '''parisc: Avoid kernel panic triggered by invalid kprobe'''] (backported to 5.2)
 +
** parisc: Wire up clone3 syscall
 +
** parisc: add kprobe_fault_handler()
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=69245c97560b40f88c609b078f4b51c5be81d88b parisc: Flush ITLB in flush_tlb_all_local() only on split TLB machines]
 +
** parisc: Mark expected switch fall-throughs in fault.c
 +
** parisc: Fix fall-through warnings in fpudispatch.c
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3fe6c873af2f2247544debdbe51ec29f690a2ccf parisc: Fix build of compressed kernel even with debug enabled]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e50beea8e7738377b4fa664078547be338038ff9 parisc: Strip debug info from kernel before creating compressed vmlinuz]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2c5ed0dd5004c2cff5c0e3d430a107576fcc17f parisc: Add archclean Makefile target]
 +
** parisc: rename default_defconfig to defconfig
 +
** parisc: fix race condition in patching code
 +
* Kernel 5.4
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=83af58f8068ea3f7b3c537c37a30887bfa585069 '''parisc: Add assembly implementations for memset, strlen, strcpy, strncpy and strcat''']
 +
** parisc: Add ALTERNATIVE_CODE() and ALT_COND_RUN_ON_QEMU
 +
** parisc: speed up flush_tlb_all_local with qemu
 +
** parisc: Avoid warning when loading hppb driver
 +
** parisc: Convert eisa_enumerator to use pr_cont()
 +
** parisc: Drop comments which are already in pci.h
 +
** parisc: Save some bytes in dino driver
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fa1659105fac63e0f3c199b476025c2e04111ce '''parisc: Disable HP HSC-PCI Cards to prevent kernel crash'''] (backported to all)
 +
** parisc: Have git ignore generated real2.S and firmware.c
 +
** kprobes/parisc: remove arch_kprobe_on_func_entry()
 +
** parisc/ftrace: Add ARCH_SUPPORTS_FTRACE_OPS support
 +
** parisc/ftrace: Add KPROBES_ON_FTRACE
 +
** parisc: Update feature list
 +
** parisc: trigger die notifier chain in parisc_terminate()
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=175fca3bf91a1111b7e46f6655666640556b9059 '''kexec: add KEXEC_ELF''']
 +
** kexec_elf: change order of elf_*_to_cpu() functions
 +
** kexec_elf: remove parsing of section headers
 +
** kexec_elf: remove PURGATORY_STACK_SIZE
 +
** kexec_elf: remove Elf_Rel macro
 +
** kexec_elf: remove unused variable in kexec_elf_load()
 +
** kexec_elf: support 32 bit ELF files
 +
** parisc: add __pdc_cpu_rendezvous()
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fc697dc0c26a5908d467454e49440862d7fe96d0 '''parisc: add kexec syscall support''']
 +
** parisc: wire up kexec_file_load syscall
 +
** parisc: add support for kexec_file_load() syscall
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c32c47aa364096124c9c69c1a44918433832562b parisc: Remove 32-bit DMA enforcement from sba_iommu]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=513f7f747e1cba81f28a436911fba0b485878ebd '''parisc: Fix vmap memory leak in ioremap()/iounmap()'''] (backported to v3.16+)
 +
** parisc: prefer __section from compiler_attributes.h
 +
** parisc: sysctl.c: Use CONFIG_PARISC instead of __hppa_ define
 +
** MAINTAINERS: Add hp_sdc drivers to parisc arch
 +
* Kernel 5.5
 +
** parisc: Do not hardcode registers in checksum functions
 +
** kexec: Fix pointer-to-int-cast warnings
 +
** parisc: Avoid spurious inequivalent alias kernel error messages
 +
** parisc: use pgtable-nopXd instead of 4level-fixup
 +
** parisc: soft_offline_page() now takes the pfn
 +
** parisc: Fix compiler warnings in debug_core.c
 +
** parisc: fix compilation when KEXEC=n and KEXEC_FILE=y
 +
** parisc: add missing __init annotation
 +
* Kernel 5.6
 +
** parisc: Regenerate parisc defconfigs
 +
** parisc: map_pages(): cleanup page table initialization
 +
** parisc: Fix defconfig selection
 +
* Kernel 5.7
 +
** parisc: remove nargs from __SYSCALL
 +
** parisc: Refactor alternative code to accept multiple conditions
 +
** parisc: Rework arch_rw locking functions
 +
** parisc: Improve interrupt handling in arch_spin_lock_flags()
 +
** parisc: Replace setup_irq() by request_irq()
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bf71bc16e02162388808949b179d59d0b571b965 '''parisc: Fix kernel panic in mem_init()'''] (backported to all)
 +
* Kernel 5.8
 +
** parisc: use -fno-strict-aliasing for decompressor
 +
** parisc: suppress error messages for 'make clean'
 +
** parisc: Kconfig: Update references to parisc website
 +
** parisc: firmware: Update references to parisc website
 +
** parisc: hardware: Update references to parisc website
 +
** parisc: module: Update references to parisc website
 +
** parisc: MAINTAINERS: Update references to parisc website
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b6522fa409cfafbc3968679b09e4028f0609f2b9 parisc: add sysctl file interface panic_on_stackoverflow]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be6577af0cef934ccb036445314072e8cb9217b9 '''parisc: Add atomic64_set_release() define to avoid CPU soft lockups'''] (backported to all - fixes TLB stalls)
 +
** parisc: add support for cmpxchg on u8 pointers
 +
* Kernel 5.9
 +
** parisc: Replace HTTP links with HTTPS ones
 +
** parisc: Convert to BIT_MASK() and BIT_WORD()
 +
** parisc: Report bad pages as HardwareCorrupted
 +
** Revert "parisc: Improve interrupt handling in arch_spin_lock_flags()"
 +
** Revert "parisc: Drop LDCW barrier in CAS code when running UP"
 +
** Revert "parisc: Use ldcw instruction for SMP spinlock release barrier"
 +
** Revert "parisc: Revert "Release spinlocks using ordered store""
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e72b23dec1da5e62a0090c5da1d926778284e230 '''parisc: Do not use an ordered store in pa_tlb_lock()'''] (backported to 5.0+)
 +
** parisc: elf.h: delete a duplicated word
 +
** parisc: make the log level string for register dumps const
 +
** sections.h: dereference_function_descriptor() returns void pointer
 +
** parisc: Whitespace cleanups in atomic.h
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e96ebd589debd9a6a793608c4ec7019c38785dea '''parisc: Implement __smp_store_release and __smp_load_acquire barriers'''] (backported to 4.14+)
 +
** parisc/kernel/ftrace: Remove function callback casts
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5b24993c21cbf2de11aff077a48c5cb0505a0450 '''parisc: mask out enable and reserved bits from sba imask'''] (backported to all)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f6aea7e966cda5a817d091e938c2d9b52209893 '''parisc: fix PMD pages allocation by restoring pmd_alloc_one()''']
 +
* Kernel 5.10
 +
** parisc: disable CONFIG_IDE in defconfigs
 +
** fw_cfg: Add support for parisc architecture
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=024f5b597564acced9e69305f7a9ef1202186a61 '''parisc: Add qemu fw_cfg interface''']
 +
** parisc: Avoid external interrupts when IPI finishes
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=41f5a81c07cd410917c9ae3c165b9b761d48ba75 parisc: Drop HP-UX specific fcntl and signal flags]
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75ae04206a4d0e4f541c1d692b7febd1c0fdb814 '''parisc: Define O_NONBLOCK to become 000200000''']
 +
** parisc: Drop useless comments in uapi/asm/signal.h
 +
** parisc: Add ioread64_hi_lo() and iowrite64_hi_lo()
 +
** parisc: Install vmlinuz instead of zImage file
 +
** parisc: Add MAP_UNINITIALIZED define
 +
** parisc/sticon: Always register sticon console driver
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7ff3f14ddc355bfbc94c766f43b90606b1f79e83 '''parisc/sticon: Add user font support''']
 +
** parisc: Add alternative patching to synchronize_caches define
 +
** parisc: Fix comments and enable interrupts later
 +
** parisc: Mark pointers volatile in __xchg8(), __xchg32() and __xchg64()
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=53a42b6324b8ddce1e9d2f34da2ca68ef21c2084 '''parisc: Switch to more fine grained lws locks''']
 +
** parisc: Rewrite tlb flush threshold calculation
 +
** parisc: Improve spinlock handling
 +
** parisc: Improve error return codes when setting rtc time
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=879bc2d27904354b98ca295b6168718e045c4aa2 '''hil/parisc: Disable HIL driver when it gets stuck''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=44a4c9e443674e6cd3368d3e642dfe9c429d5525 '''parisc: Add wrapper syscalls to fix O_NONBLOCK flag usage''']
 +
** ata: pata_ns87415.c: Document support on parisc with superio chip
 +
* Kernel 5.11
 +
** parisc: pci-dma: fix warning unused-function
 +
** parisc/uapi: Use Kbuild logic to provide <asm/types.h>
 +
** parisc: Drop loops_per_jiffy from per_cpu struct
 +
** parisc: Use _TIF_USER_WORK_MASK in entry.S
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22ee3ea588dfc84ccb8cea5ea37051dfed91b9b9 parisc: Make user stack size configurable]
 +
** parisc: Remove leftover reference to the power_tasklet
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=00e35f2b0e8acb88d4e1aa96ff0490e3bfe46580 '''parisc: Enable -mlong-calls gcc option by default when !CONFIG_MODULES'''] (backported to v5.6+)
 +
* Kernel 5.12
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b7795074a04669d0a023babf786d29bf67c68783 '''parisc: Optimize per-pagetable spinlocks''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2347961b11d4079deace3c81dceed460c08a8fc1 '''binfmt_misc: pass binfmt_misc flags to the interpreter'''] (needed for better qemu-user support on all platforms)
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c70919bd9d0782a6078ccd37d7f861d514f5481e '''parisc: Fix IVT checksum calculation wrt HPMC''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=31680c1d1595a59e17c14ec036b192a95f8e5f4a parisc: Bump 64-bit IRQ stack size to 64 KB]
 +
** parisc: Drop out of get_whan() if task is running again
 +
** parisc: Use the generic devmem_is_allowed()
 +
** parisc: Replace test_ti_thread_flag() with test_tsk_thread_flag()
 +
** parisc: Enable -mlong-calls gcc option with CONFIG_COMPILE_TEST (backported to v5.6+)
 +
** arch/parisc/kernel: remove duplicate include in ptrace
 +
** parisc: math-emu: Few spelling fixes in the file fpu.h
 +
** parisc: avoid a warning on u8 cast for cmpxchg on u8 pointers (backported to v5.8+)
 +
** parisc: parisc-agp requires SBA IOMMU driver (backported to all)
 +
** parisc: Remove duplicate struct task_struct declaration
 +
* Kernel 5.13
 +
** parisc: switch to generic syscall header scripts
 +
* Kernel 5.14
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f6a3308d6feb351d9854eb8b3f6289a1ac163125 '''Revert "parisc: Add assembly implementations for memset, strlen, strcpy, strncpy and strcat"'''] (backported to 5.4+)
 +
* Kernel 5.15
 +
** parisc: switch from 'pci_' to 'dma_' API
 +
** parisc/parport_gsc: switch from 'pci_' to 'dma_' API
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=55b70eed81cba1331773d4aaf5cba2bb07475cd8 parisc: Increase size of gcc stack frame check]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f1fce595b78b775d7fb585c15c2dc3a6994f96e parisc: math-emu: Fix fall-through warnings]
 +
** parisc: Replace symbolic permissions with octal permissions
 +
** parisc: math-emu: Avoid "fmt" macro collision
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d220da0967dbda232350c5dc39317e04e0892743 parisc: remove unused arch/parisc/boot/install.sh and its phony target]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ef4661cad32b5098ffb31be3282c866befde85f parisc: move core-y in arch/parisc/Makefile to arch/parisc/Kbuild]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f6e0fe01b6b33894cf6f61b359ab5a6d2b7674e parisc: Fix compile failure when building 64-bit kernel natively]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bf82eb3873fbbee8273f60ddef584194b99f6c1 parisc: Rename PMD_ORDER to PMD_TABLE_ORDER]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=030f653078316a9cc9ca6bd1b0234dcf858be35d '''parisc: fix crash with signals and alloca'''] (backported to all)
 +
** parisc: ccio-dma.c: Added tab instead of spaces
 +
** parisc: Make struct parisc_driver::remove() return void
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e5a2cac908df691f1637f9272d4c6dec83239611 parisc: Drop __arch_swab16(), arch_swab24(), _arch_swab32() and __arch_swab64() functions]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c42813b71a06a2ff4a155aa87ac609feeab76cf3 '''parisc: Fix unaligned-access crash in bootloader'''] (backported to v5.14)
 +
** parisc: Move pci_dev_is_behind_card_dino to where it is used
 +
** parisc: Add missing FORCE prerequisite in Makefile
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1260dea6d2eb75706c978da828a36f0def590d3a '''parisc: Drop strnlen_user() in favour of generic version''']
 +
** parisc: Drop useless debug info and comments from signal.c
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e4a1aff2a97cb4fd7f0268e4b69e8c9d3641277 parisc: Check user signal stack trampoline is inside TASK_SIZE]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4f2006f1287e7ea17660490569cff323772dac4 '''parisc: Reduce sigreturn trampoline to 3 instructions'''] '''(was reverted in v5.15 and v5.16)'''
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d97180ad68bdb7ee10f327205a649bc2f558741d parisc: Mark sched_clock unstable only if clocks are not syncronized]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=671028728083e856e9919221b109e3b2cd2ccc49 '''parisc: Implement __get/put_kernel_nofault()'''] (Dropped CONFIG_SET_FS incl. KERNEL_DS and USER_DS)
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=90cc7bed1ed19f869ae7221a6b41887fe762a6a3 parisc: Use absolute_pointer() to define PAGE0]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9caea0007601d3bc6debec04f8b4cd6f4c2394be parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled]
 +
* Kernel 5.16
 +
** parisc: Make use of the helper macro kthread_run()
 +
** parisc: make parisc_acctyp() available outside of faults.c
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=aeb1e833a4c38efffad9556cf7f458c4e5de5b45 '''parisc: Switch to ARCH_STACKWALK implementation''']
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec5c115050f59114e216212837f1c1ebc54bdfc9 '''parisc: Add KFENCE support''']
 +
** parisc: Define FRAME_ALIGN and PRIV_USER/PRIV_KERNEL in assembly.h
 +
** parisc: Allocate task struct with stack frame alignment
 +
** parisc: Use FRAME_SIZE and FRAME_ALIGN from assembly.h
 +
** parisc: Use PRIV_USER instead of 3 in entry.S
 +
** task_stack: Fix end_of_stack() for architectures with upwards-growing stack
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8779e05ba8aaffec1829872ef9774a71f44f6580 '''parisc: Fix ptrace check on syscall return'''] (backported to all)
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2214c0e77259b420402e279e9ab4277ef320d371 '''parisc: Move thread_info into task struct''']
 +
** parisc: Use PRIV_USER in syscall.S
 +
** parisc: Use PRIV_USER and PRIV_KERNEL in ptrace.h
 +
** parisc: Drop ifdef __KERNEL__ from non-uapi kernel headers
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3759778e6b8c0d547d77f681a7779edccdf1710a '''parisc: enhance warning regarding usage of O_NONBLOCK''']
 +
** parisc: Remove unused constants from asm-offsets.c
 +
** parisc: Update defconfigs
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6e866a462867b60841202e900f10936a0478608c '''parisc: Fix set_fixmap() on PA1.x CPUs'''] (backported to v5.3+)
 +
** parisc: decompressor: remove repeated depenency of misc.o
 +
** parisc: decompressor: clean up Makefile
 +
** parisc/unwind: use copy_from_kernel_nofault()
 +
** parisc: disable preemption during local tlb flush
 +
** parisc: deduplicate code in flush_cache_mm() and flush_cache_range()
 +
** parisc: fix preempt_count() check in entry.S
 +
** parisc: disable preemption in send_IPI_allbutself()
 +
** parisc: fix warning in flush_tlb_all
 +
** parisc/unwind: fix unwinder when CONFIG_64BIT is enabled
 +
** parisc: move virt_map macro to assembly.h
 +
** parisc: add PIM TOC data structures
 +
** parisc/firmware: add functions to retrieve TOC data
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc294838cc3443a2fbec58f8936ad4bd0a0b3055 '''parisc: add support for TOC (transfer of control)''']
 +
** parisc/kgdb: add kgdb_roundup() to make kgdb work with idle polling
 +
** parisc: mark xchg functions notrace
 +
** parisc/ftrace: set function trace function
 +
** parisc/ftrace: use static key to enable/disable function graph tracer
 +
** parisc: Use swap() to swap values in setup_bootmem()
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=014966dcf76bce5717f7d974d0410d3402a651c2 '''parisc: don't enable irqs unconditionally in handle_interruption()''']
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e992711dddbdb1c27d077432d8440fefd44819f '''parisc: Don't disable interrupts in cmpxchg and futex operations''']
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2a2e8202c7a16a85a881ad2b6e32ccbebdc01dda parisc: move CPU field back into thread_info]
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=279917e27edc293eb645a25428c6ab3f3bca3f86 '''parisc: Fix backtrace to always include init funtion names'''] (backported to v5.4+ - and '''reverted in v5.16''')
 +
** parisc: Fix implicit declaration of function __kernel_text_address
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=38860b2c8bb1b92f61396eb06a63adff916fc31d '''parisc: Flush kernel data mapping in set_pte_at() when installing pte for user page'''] (backported to v5.12+)
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3ec18fc7831e7d79e2d536dd1f3bc0d3ba425e8a '''parisc/entry: fix trace test in syscall exit path''']  to-be-backported!
 +
** parisc: Include stringify.h to avoid build error in crypto/api.c
 +
** parisc: Wire up futex_waitv
 +
** parisc: Wrap assembler related defines inside __ASSEMBLY__
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=79df39d535c7a3770856fe9f5aba8c0ad1eebdb6 '''Revert "parisc: Reduce sigreturn trampoline to 3 instructions"'''] (reverted in v5.15 too)
 +
** parisc: Enable CONFIG_PRINTK_TIME=y in 32bit defconfig
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bec05f33ebc1006899c6d3e59a00c58881fe7626 '''parisc/sticon: fix reverse colors'''] (backported to all)
 +
** parisc: Increase FRAME_WARN to 2048 bytes on parisc
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=169d1a4a2adb2c246396c56aa2f9eec3868546f1 '''parisc: Provide an extru_safe() macro to extract unsigned bits''']
 +
** parisc: Convert PTE lookup to use extru_safe() macro
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=98400ad75e95860e9a10ec78b0b90ab66184a2ce '''Revert "parisc: Fix backtrace to always include init funtion names"'''] (backported to v5.4+)
 +
** [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=df2ffeda6370a77011902e7c9d7a1eb1cbffed4f '''parisc: Fix extraction of hash lock bits in syscall.S''']
  
 
== Debian kernel and userspace programs ==
 
== Debian kernel and userspace programs ==
* Problem building libcap-ng...The problem is the call to __tls_get_addr clobbers the value loaded into %r26 for the printf call. -> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59777
 
 
 
* PALO (http://git.kernel.org/cgit/linux/kernel/git/deller/palo.git/)
 
* PALO (http://git.kernel.org/cgit/linux/kernel/git/deller/palo.git/)
** increase palo command line from 128 bytes (max from kernel is 1024 currently) -> fixed in palo 1.92.  
+
** DONE: increase palo command line from 128 bytes (max from kernel is 1024 currently) -> fixed in palo 1.92.  
** accept /boot/ in front of files, strip path (e.g. "/boot") when given for kernel/ramdisk  
+
** DONE: accept /boot/ in front of files, strip path (e.g. "/boot") when given for kernel/ramdisk  
** Migrate to git.kernel.org -> done: http://git.kernel.org/cgit/linux/kernel/git/deller/palo.git/
+
** DONE: Migrate to git.kernel.org -> done: http://git.kernel.org/cgit/linux/kernel/git/deller/palo.git/
** add gzip-support (allow loading gzipped vmlinux files)
+
** DONE: add gzip-support (allow loading gzipped vmlinux files)
** in interactive mode, add reboot option command
+
** DONE: in interactive mode, add reboot option command
 +
** DONE: [https://git.kernel.org/cgit/linux/kernel/git/deller/palo.git/commit/?id=70bd7a9a41e318c0575755a78c4d18ad97495c47 '''Unbreak loading Linux kernels bigger than 16 MB'''] (fixed in palo 1.96, Oct. 2016)
 +
** DONE: Du to alternative coding in 4.20, ship debian kernel as SMP variant only (Kernel 4.20)
  
* Debian kernel
+
Debian kernel / Generic Kernel bugs fixed
 +
** DONE: Fixed 64bit SMP kernel & sticon on machines with more than 4GB RAM (Kernel 3.12)
 +
** DONE: Lots of syscall fixes regarding compat kernel
 +
** DONE: send patches to remove UP from debian kernels, use sil680 instead of siimage, see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721191 -> fixed in 3.12 / 3.13
 
** DONE: Enable BMC in c8000 default kernel config - ipmi driver (CONFIG_IPMI_HANDLER=y) - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=747482
 
** DONE: Enable BMC in c8000 default kernel config - ipmi driver (CONFIG_IPMI_HANDLER=y) - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=747482
 
** DONE: remove HIL RTC from debian kernel - it creates a backtrace at boot because we have already another rtc0 active.
 
** DONE: remove HIL RTC from debian kernel - it creates a backtrace at boot because we have already another rtc0 active.
 +
** DONE: add ppdev driver, needed by CUPS, systemd reports missing module load (3.17 & 3.16 kernel)
 +
** DONE: Add crc-modules, event, isofs, jfs, mouse, sata, sound, squashfs, udf, uinput, scsi-common, scsi-extra, loop, serial and usb-serial debian-installer packages
 +
** DONE: Kernel build problem: a) disable -mfast-indirect-calls in Makefile, b) gcc compiler bug in > gcc-4.8.3-3
 +
** DONE: Drop HPUX-support from kernel (Kernel 4.0)
 +
** DONE: implemented HUGE pages
 +
** DONE: kernel timerfd_settime/timerfd_gettime issue, test with debian package:  liblinux-fd-perl -> https://patchwork.kernel.org/patch/7951661/, backported to all kernels
 +
** DONE: kernel ptrace bug: http://thread.gmane.org/gmane.linux.ports.parisc/26273, possible fix: https://patchwork.kernel.org/patch/8063301/
 +
** DONE: Implement CONFIG_DEBUG_STACK_USAGE, in kernel 4.6
 +
** DONE: Use 32bit exception table entries, in kernel 4.6
 +
** DONE: implemented seccomp syscal, including SECCOMP_MODE_STRICT and mode 2
 +
** DONE: Fixed FTRACE support (http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=366dd4ea9d5f0eb78fdf4982d76506f99480ec0a)
 +
** DONE: Add syscall ftrace support
 +
** DONE: Simplify get_user()/put_user() with regard to %sr0/%sr2 usage.
 +
** DONE: Add tracehook support (needed for seccomp testcases, gdb, ...)
 +
** DONE: Added high-resolution sched_clock clocksources in 4.7, needed for debian packages: ismrmrd, haskell-http-conduit, ...
 +
** DONE: Detect physically broken memory via Page Deallocation Table (PDT), initial support in kernel 4.13
 +
** DONE: Make kernel self-decompressing (instead of palo reading gzipped kernels)
 +
** DONE: fix %pF and %pS usage in all kernel code
 +
** DONE: Enabled BMC/IPMI including Remote power on/off on C8000 and rp3410 machines (kernel 4.17 and above)
 +
** DONE: use CONFIG_COMPAT_BINFMT_ELF and get rid of arch/parisc/kernel/binfmt_elf32.c
 +
** DONE: Fix kernel writing core file, gdb reporting: BFD: Warning: /tmp/core.http.1655.ls3011.1465554447 is truncated: expected core file size >= 2187264, found: 2121728.
 +
** DONE: Find way to extract vmlinux out of vmlinuz (Kernel 4.19)
 +
** DONE: Implement alternative coding for UP & SMP, one debian kernel for UP and SMP, optimizations to avoid cache flushes on cache-less systems and other qemu-related speed-ups to avoid unnecessary syncronization (Kernel 4.20)
 +
** DONE: IRQ Balancing was broken, http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f73493eb4aecdd6edd8a749890e6e2dcfa0a7978
 +
** DONE: Added kgdb and kprobes in kernel 5.2, by Sven Schnelle
 +
** DONE: report on C8000 one socket with 2 cores
 +
** DONE: Check Kernel boot code if RAM of machine is big enough (e.g. is booting on 710 machine with 60MB possible?) - https://patchwork.kernel.org/patch/10888283/
 +
** DONE: convert to SPARSEMEM, instead of DISCONTIGMEM
 +
** DONE: (NOT POSSIBLE:) Enable huge pages on kernel text for C8000 as well - not possible, will crash due to required equivalent aliasing of caches.
 +
** DONE: Enable __ro_after_init
 +
** DONE: add dynamic ftrace support - provided by Sven in kernel 5.3
 +
** DONE: Fix fallouts from strace: http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b7dc5a071ddf69c0350396b203cba32fe5bab510,
 +
** DONE: implement kexec syscall
 +
** DONE: Analyze futex hang (CPU soft lockup) situation with test-lock testcase in the libprelude debian package - fixed by [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be6577af0cef934ccb036445314072e8cb9217b9 '''parisc: Add atomic64_set_release() define to avoid CPU soft lockups''']
 +
** DONE: Add TOC handler, sending TOC via IPMI interface "toc s"
 +
** DONE: autofs/automounter is broken, patch sent to list, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892953
  
 
* Debian installer:
 
* Debian installer:
 
** DONE: test xorriso (Thomas Schmitt, scdbackup)
 
** DONE: test xorriso (Thomas Schmitt, scdbackup)
 +
** DONE: Build real debian-installer CD. See: https://wiki.debian.org/Simple-CDD/Howto
 +
** DONE: we need a kernel debian package (3.10 based or higher)
 +
** DONE: [http://anonscm.debian.org/cgit/d-i/attic/palo-installer.git/ palo-installer: fix palo entry "root=/dev/sda5" to become "root=UUID=XXXX"] 
  
== parisc-linux.org and Debian infrastructure work ==
+
* binutils:
 +
** DONE: Add linker -fpie support, https://sourceware.org/bugzilla/show_bug.cgi?id=18421, debian package iceweasel and others
 +
** DONE: Using "gcc -o /dev/null" gives "ld: final link failed: File truncated" error: https://sourceware.org/bugzilla/show_bug.cgi?id=19526
 +
 
 +
* gcc:
 +
** DONE: Linker reports "XXX referenced in section `.data.rel.ro.local' of YYY: defined in discarded section `.text._ZXXX"
 +
*** [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=da6e19a92645583da12dc2d15f54d2bd240fd3f2;hp=7d8a636c9a234354c9b2ecf01b6e405bece190a1 binutils fix in bfd/elf32-hppa] and [https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67834 gcc upstream bug report] and [https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=801531 Debian binutils bug report]
 +
** DONE: Qt5/KDE signal & slot issue: Pointers to method types need canonicalization before comparison, fixed in gcc: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68079
 +
** DONE: Add wiki page about kernel cross-compiling
 +
 
 +
* glibc:
 +
** DONE: Problem building libcap-ng...The problem is the call to __tls_get_addr clobbers the value loaded into %r26 for the printf call. -> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59777
 +
** DONE: O_SYNC wrongly defined in glibc (typo in hppa __O_SYNC define in <bits/fcntl.h>)
 +
** DONE: eglibc mmap bug with localedef (see debian bugzilla http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741243)
 +
** DONE: Wrong __gmon_start__ symbol, showed in vlc - linker does not drop dependencies to unneeded shared libs, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=770741. glibc bug report: https://sourceware.org/bugzilla/show_bug.cgi?id=19170
 +
** DONE: nss - dladdr from glibc returns wrong names on hppa, http://article.gmane.org/gmane.linux.ports.parisc/26290, Solution: https://sourceware.org/bugzilla/show_bug.cgi?id=19415
 +
** DONE: gcc userspace support for variable CAS (gcc atomic ops, __sync_XXX), initial support in kernel 3.17, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=89206491201cbd1571009b36292af781cef74c1b)
 +
*** gcc-4.9 commit: https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=227914
 +
*** gcc-5.0 commit: https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=227913
 +
*** packages needing rebuild: libatomic-ops (gauche and libgc have copies of libatomic-ops included), x265, ceph, lizardfs, firebird2.5, gauche, idba, mapsembler2, padevchooser, filezilla, idba, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=785654
 +
*** __sync_val_compare_and_swap_8 was missing in: openvdb, idba, lizardfs, ...
 +
 
 +
* Debian userspace:
 +
** DONE: qt4-x11: Improve atomic support on parisc (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741190)
 +
** DONE: haskell (ghc) hangs: futex(0xea00d08e, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EINVAL (Invalid argument). Solution: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756260#15
 +
** DONE: port openmpi package: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776730
 +
** DONE: Fix msgpuck build breakage: https://buildd.debian.org/status/package.php?p=msgpuck&suite=sid
 +
** DONE: Fix sbuild not returning used disc size: /usr/share/perl5/Sbuild/Build.pm line 2786, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=923484
 +
** DONE: Why does mc hangs when exiting with F10? - https://midnight-commander.org/ticket/3887 - endianess bug in mc source code
 +
 
 +
* QEMU:
 +
** DONE: Add kernel fw_cfg support (drivers/firmware/qemu_fw_cfg.c)
 +
 
 +
== ABI breakages (e.g. dropped HP-UX support) ==
 +
* [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5a408d53edef3af07ac7697b8bc54a755628450 We dropped HP-UX support in kernel 3.14 by changing EWOULDBLOCK==EAGAIN.] HP-UX could be run in a VM instead or since machines are relatively cheap now, if someone needs hpux, they can buy a machine for it.
 +
* [http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f25df2eff5b25f52c139d3ff31bc883eee9a0ab Changed SIGRTMIN to 32 (from 37)]
 +
** [http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=766605 debian glibc report]  and  [http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=766635 debian kernel bug report]
 +
** September 7th 2014: First delivery with vmlinux-3.16.0-4 (aka linux-image-3.16.0-4-parisc64-smp_3.16.7-1_hppa.deb)
 +
** How to install:
 +
*** Install the new glibc debian package, then install systemd, then install the new kernel package (this will create a new initrd), reboot
 +
** rebuild of following packages needed:
 +
*** unxz-utils: rebuild unxz to fix usage of SIGXFSZ
 +
*** strace and gdb: fix signal names/numbers
 +
*** libgc: gives "Cannot set SIG_THR_RESTART handler" error since SIG_THR_RESTART has been SIGXCPU which is now used for threads
 +
*** (maybe) gcc-4.9 which links against libgc...? (affects objc related code only)
 +
*** dietlibc (patch sent upstream) - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=769105  TODO: make patch for dietlibc to use LONG_LONG_PAIR for ftruncate64() and then rebuild util-vserver package
 +
* [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93cb8e20d56be40c541475f77b5f565fbb385a4b Dropped ENOTSUP (252) constant from kernel with v4.19]. Gave problems and parisc is only platform which defined it because of HP-UX, see libuv bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=900237. Nevertheless rebuild of libattr, libseliux and fakeroot necessary.
 +
* '''Kernel 5.10: Define O_NONBLOCK to become 000200000 (instead of 000200004):'''
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75ae04206a4d0e4f541c1d692b7febd1c0fdb814 '''parisc: Define O_NONBLOCK to become 000200000''']
 +
** [http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=44a4c9e443674e6cd3368d3e642dfe9c429d5525 '''parisc: Add wrapper syscalls to fix O_NONBLOCK flag usage''']
 +
** [https://sourceware.org/git?p=glibc.git;a=commit;h=a24f414ba11a7acdf3c5ccec3fb327fc72166556 '''GLIBC PATCH: Remove obsolete defines for HPUX support from fcntl.h and update O_NONBLOCK.''']
 +
** [https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=974690 ''dietlibc Debian bug report'']
 +
 
 +
== Considerations between Debian unstable and Debian Jessie release ==
 +
Jessie was not stable on SMP machines, particularly those with PA8800/PA8900 processors.
 +
It's recommended to use kernel 4.4.15 or later.
 +
The current default gcc for unstable is gcc 5.4. Most hppa fixes have been back ported to 4.9 but not all.
 +
It shouldn't hurt to use binutils from unstable.
 +
Debian glibc 2.23 is best. Most old packages should still work although there maybe inequivalent aliasing issues
 +
which are relevant on PA8800. There's also a nasty issue with gmon_start being in every shared library in Jessie.
 +
This caused a few headaches and potentially breaks applications when it's removed from a library. If you
 +
stick with the glibc in Jessie, multithreaded applications may not work as well as they could,
 +
but maybe that's not important.
 +
The kernel update is the most important one.
 +
Since hppa moved to ports, there has been a huge number of bug fixes. System stability is
 +
dramatically improved and I believe more packages are available than ever before. It's better to run unstable
 +
and just be selective about running "apt-get upgrade".
 +
(by Dave Anglin)
 +
 
 +
== parisc-linux.org Homepage and Debian build server infrastructure work ==
 
* DONE: Ask Thibaut to add ftp mirror of http://ftp.parisc-linux.org/debian_ports on http://www.fr.parisc-linux.org/  
 
* DONE: Ask Thibaut to add ftp mirror of http://ftp.parisc-linux.org/debian_ports on http://www.fr.parisc-linux.org/  
 
* DONE: Set up a buildd server for debian-ports/unstable & experimental -> http://unstable.buildd.net/index-hppa.html
 
* DONE: Set up a buildd server for debian-ports/unstable & experimental -> http://unstable.buildd.net/index-hppa.html
 
* DONE: contact pannonmage@gmail.com (Nemeth Balint, Budapest) to set up buildd server - mail from 04.08.2013
 
* DONE: contact pannonmage@gmail.com (Nemeth Balint, Budapest) to set up buildd server - mail from 04.08.2013
* Offer from mike@csystems.co.nz for A400 system as buildd - mail from 18.09.2014
+
* Offer from Mike Hosken <mike@csystems.co.nz> for A400 system as buildd - mail from 18.09.2014 and 17.05.2015
 
* DONE: set up buildd server on ESIEE's A500 (Thibaut) - mail from 13.08.2013
 
* DONE: set up buildd server on ESIEE's A500 (Thibaut) - mail from 13.08.2013
 
* DONE Sep 12 2014: migrate mail forward service for parisc-linux.org to A500 machine
 
* DONE Sep 12 2014: migrate mail forward service for parisc-linux.org to A500 machine
 
* DONE Sep 12 2014: restore web-based http://ftp.parisc-linux.org service
 
* DONE Sep 12 2014: restore web-based http://ftp.parisc-linux.org service
* MOSTLY DONE Nov 24 2014: Import old hppa mailing list archives to gmane.org - http://dir.gmane.org/gmane.linux.ports.parisc
+
* DONE Nov 24 2014: Import old hppa mailing list archives to gmane.org - http://dir.gmane.org/gmane.linux.ports.parisc
 +
* Homepage migration:
 +
** DONE: Migration of parisc-linux.org website to https://parisc.wiki.kernel.org
 +
** DONE: Migration of wiki.parisc-linux.org website to https://parisc.wiki.kernel.org
 +
** DONE: Domain owner before: Matt Taggart <matt@lackof.org>, Expiration Date:09-Aug-2014; Since August 2014 is Helge Deller domain owner of parisc-linux.org
 +
** DONE: DNS takeover by Thibaut Varenet on 11/11/2013 - see: http://article.gmane.org/gmane.linux.ports.parisc/5478
 +
** DONE: former Server administrator of parisc-linux.org: Dann Frazier - dannf@dannf.org, former technical contact at HP: brett.johnson@hp.com, Since August 2014 administrator/owner: Helge Deller
  
= Kernel Testing Tools =
+
== Linus Torvalds barking at parisc ==
 +
* https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19b9ad67310ed2f685062a00aec602bec33835f0
  
 +
= Testsuites, kernel and userspace testing tools =
 +
 +
* GLIBC issues and todos: https://sourceware.org/glibc/wiki/PortStatus
 
* https://github.com/linux-test-project/ltp - Linux Test Project
 
* https://github.com/linux-test-project/ltp - Linux Test Project
 
* http://codemonkey.org.uk/projects/trinity/ - Trinity - A Linux System call fuzz tester.
 
* http://codemonkey.org.uk/projects/trinity/ - Trinity - A Linux System call fuzz tester.
Line 246: Line 1,036:
 
= TODO Drivers =
 
= TODO Drivers =
  
* IPMI support on rp-class / Support graceful shutdown from BMC on rp servers (`PC -GRACEFUL`)
 
 
* write Lasi floppy driver
 
* write Lasi floppy driver
 
* write Suckyio floppy driver
 
* write Suckyio floppy driver
Line 258: Line 1,047:
  
 
* ns87415 dma doesn't work reliably on suckyio-systems
 
* ns87415 dma doesn't work reliably on suckyio-systems
 
* investigate not putting in extable entries for put_kernel_asm; will probably reduce kernel size
 
 
 
* fix HIL problem: ksoftirqd/0 eats 56% cpu (kernel 2.4 & kernel 2.6) - see FAQ: http://www.parisc-linux.org/faq/index.html and http://article.gmane.org/gmane.linux.ports.parisc/278/match=use+lower+nice+level+ksoftirqd+hil+enabled
 
* fix HIL problem: ksoftirqd/0 eats 56% cpu (kernel 2.4 & kernel 2.6) - see FAQ: http://www.parisc-linux.org/faq/index.html and http://article.gmane.org/gmane.linux.ports.parisc/278/match=use+lower+nice+level+ksoftirqd+hil+enabled

Latest revision as of 18:45, 24 November 2021

Contents

[edit] PA-RISC Linux TODO (actually this is Helge's TODO list)

[edit] Status & TODO 2021-11-24

/tmp/cceXP0uE.s: Assembler messages:
/tmp/cceXP0uE.s:1493: Error: Invalid Shift/Extract/Deposit Condition.
/tmp/cceXP0uE.s:1493: Error: Undefined absolute constant: '.loc'.
/tmp/cceXP0uE.s:1493: Error: Field out of range [0..31] (-1).
/tmp/cceXP0uE.s:1493: Error: Invalid operands
make[4]: *** [Makefile:1117: alias.o] Error 1
  • Kernel: still missing Linux kernel development (no patches available yet):
    • maybe implement transparent huge pages (due to cache coherency technically only possible on PA8500-PA8700 CPUs, not possible on PA8800-PA8900 CPUs)
    • optimize flush_dcache_page() implementation like sparc. See Documentation/cachetlb.txt, e.g. used in aio subsystem
    • NO_IRQ -> should be converted to (0) instead of (-1) -> Helge (check assembly, check in drivers/parisc/*)
    • check assembly in drivers/parisc/*
    • use pdc_add_valid() in kern_addr_valid(), protect against crashable acesses (like for superio-pc-drivers-detection in lp), add pdc_add_valid() to create a probe_kernel_read() implementation.
  • Kernel: Low priority patches needs further work
    • disable FP-register save/restore at kernel entry? - https://patchwork.kernel.org/patch/3975291/
    • enable 16k/64k kernel page sizes (still cacheflushing-issues with SCSI driver, additional work in glibc needed to deal with >4k page size, e.g. ld-loader alignments of data/code segments)
    • Superdome support - can someone test? Should work better now with latest kernels (maybe ask Dennis Clarke <dclarke@blastwave.org>, Jan 2019).
    • implement BUG() and WARN() with inline assembly so that interrupt happens in delay branch of "or,<> %r0,cond,%r0". Probably not possible, because gcc will report "control reaches end of non-void function" warnings/errors.
  • 64-bit userspace support (from Dave Anglin, Nick Hudson):
    • 64-bit userspace, Binutils 64-bit binutils needs to be fixed to get multiple stub section support.
    • glibc port (hppa64 can use the generic thread code)
    • 64-bit support in gcc is probably pretty good as 64-bit HP-UX works fine.
    • gdb could be a problem due to a lack of a maintainer.
  • Debian packages / Userspace work
    • IMPORTANT: fix OpenJDK - fixes required in zeroport (stack grows up!).
    • gcc -> join 32- and 64bit compiler, make "-m64" work, get rid of hppa64-linux-gnu-gcc
  • userspace
  • palo (PA-RISC Boot Loader):
    • Fix palo deb package to build iplboot natively (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851792)
    • Palo needs better user interaction instead of "0", "1".... Howtos.
    • Modify (if possible), that palo can read (sequential) tftpbootable-vmlinuxes as well as the current boot-vmlinux images (simplifies build/handling)

[edit] Upstream PA-RISC-related kernel patch history

[edit] Debian kernel and userspace programs

Debian kernel / Generic Kernel bugs fixed

    • DONE: Fixed 64bit SMP kernel & sticon on machines with more than 4GB RAM (Kernel 3.12)
    • DONE: Lots of syscall fixes regarding compat kernel
    • DONE: send patches to remove UP from debian kernels, use sil680 instead of siimage, see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721191 -> fixed in 3.12 / 3.13
    • DONE: Enable BMC in c8000 default kernel config - ipmi driver (CONFIG_IPMI_HANDLER=y) - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=747482
    • DONE: remove HIL RTC from debian kernel - it creates a backtrace at boot because we have already another rtc0 active.
    • DONE: add ppdev driver, needed by CUPS, systemd reports missing module load (3.17 & 3.16 kernel)
    • DONE: Add crc-modules, event, isofs, jfs, mouse, sata, sound, squashfs, udf, uinput, scsi-common, scsi-extra, loop, serial and usb-serial debian-installer packages
    • DONE: Kernel build problem: a) disable -mfast-indirect-calls in Makefile, b) gcc compiler bug in > gcc-4.8.3-3
    • DONE: Drop HPUX-support from kernel (Kernel 4.0)
    • DONE: implemented HUGE pages
    • DONE: kernel timerfd_settime/timerfd_gettime issue, test with debian package: liblinux-fd-perl -> https://patchwork.kernel.org/patch/7951661/, backported to all kernels
    • DONE: kernel ptrace bug: http://thread.gmane.org/gmane.linux.ports.parisc/26273, possible fix: https://patchwork.kernel.org/patch/8063301/
    • DONE: Implement CONFIG_DEBUG_STACK_USAGE, in kernel 4.6
    • DONE: Use 32bit exception table entries, in kernel 4.6
    • DONE: implemented seccomp syscal, including SECCOMP_MODE_STRICT and mode 2
    • DONE: Fixed FTRACE support (http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=366dd4ea9d5f0eb78fdf4982d76506f99480ec0a)
    • DONE: Add syscall ftrace support
    • DONE: Simplify get_user()/put_user() with regard to %sr0/%sr2 usage.
    • DONE: Add tracehook support (needed for seccomp testcases, gdb, ...)
    • DONE: Added high-resolution sched_clock clocksources in 4.7, needed for debian packages: ismrmrd, haskell-http-conduit, ...
    • DONE: Detect physically broken memory via Page Deallocation Table (PDT), initial support in kernel 4.13
    • DONE: Make kernel self-decompressing (instead of palo reading gzipped kernels)
    • DONE: fix %pF and %pS usage in all kernel code
    • DONE: Enabled BMC/IPMI including Remote power on/off on C8000 and rp3410 machines (kernel 4.17 and above)
    • DONE: use CONFIG_COMPAT_BINFMT_ELF and get rid of arch/parisc/kernel/binfmt_elf32.c
    • DONE: Fix kernel writing core file, gdb reporting: BFD: Warning: /tmp/core.http.1655.ls3011.1465554447 is truncated: expected core file size >= 2187264, found: 2121728.
    • DONE: Find way to extract vmlinux out of vmlinuz (Kernel 4.19)
    • DONE: Implement alternative coding for UP & SMP, one debian kernel for UP and SMP, optimizations to avoid cache flushes on cache-less systems and other qemu-related speed-ups to avoid unnecessary syncronization (Kernel 4.20)
    • DONE: IRQ Balancing was broken, http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f73493eb4aecdd6edd8a749890e6e2dcfa0a7978
    • DONE: Added kgdb and kprobes in kernel 5.2, by Sven Schnelle
    • DONE: report on C8000 one socket with 2 cores
    • DONE: Check Kernel boot code if RAM of machine is big enough (e.g. is booting on 710 machine with 60MB possible?) - https://patchwork.kernel.org/patch/10888283/
    • DONE: convert to SPARSEMEM, instead of DISCONTIGMEM
    • DONE: (NOT POSSIBLE:) Enable huge pages on kernel text for C8000 as well - not possible, will crash due to required equivalent aliasing of caches.
    • DONE: Enable __ro_after_init
    • DONE: add dynamic ftrace support - provided by Sven in kernel 5.3
    • DONE: Fix fallouts from strace: http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b7dc5a071ddf69c0350396b203cba32fe5bab510,
    • DONE: implement kexec syscall
    • DONE: Analyze futex hang (CPU soft lockup) situation with test-lock testcase in the libprelude debian package - fixed by parisc: Add atomic64_set_release() define to avoid CPU soft lockups
    • DONE: Add TOC handler, sending TOC via IPMI interface "toc s"
    • DONE: autofs/automounter is broken, patch sent to list, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892953
  • QEMU:
    • DONE: Add kernel fw_cfg support (drivers/firmware/qemu_fw_cfg.c)

[edit] ABI breakages (e.g. dropped HP-UX support)

[edit] Considerations between Debian unstable and Debian Jessie release

Jessie was not stable on SMP machines, particularly those with PA8800/PA8900 processors. It's recommended to use kernel 4.4.15 or later. The current default gcc for unstable is gcc 5.4. Most hppa fixes have been back ported to 4.9 but not all. It shouldn't hurt to use binutils from unstable. Debian glibc 2.23 is best. Most old packages should still work although there maybe inequivalent aliasing issues which are relevant on PA8800. There's also a nasty issue with gmon_start being in every shared library in Jessie. This caused a few headaches and potentially breaks applications when it's removed from a library. If you stick with the glibc in Jessie, multithreaded applications may not work as well as they could, but maybe that's not important. The kernel update is the most important one. Since hppa moved to ports, there has been a huge number of bug fixes. System stability is dramatically improved and I believe more packages are available than ever before. It's better to run unstable and just be selective about running "apt-get upgrade". (by Dave Anglin)

[edit] parisc-linux.org Homepage and Debian build server infrastructure work

[edit] Linus Torvalds barking at parisc

[edit] Testsuites, kernel and userspace testing tools

[edit] TODO Drivers

  • write Lasi floppy driver
  • write Suckyio floppy driver
  • write spifi driver (rbrad)
  • modify ncr53c8xx driver for Outfield (735 & 755)
  • write GSC FDDI driver
  • write Timi ASIC (74x) support
  • EISA DMA support

[edit] Review all the todo entries below!

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