TODO

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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) =
  
== Status & TODO 2016-10-06 ==
+
== Status & TODO 2021-10-14 ==
 
+
* Implement TOC in qemu ?
* Add kasan checks ?
+
* __muldi3 routine in libgcc.a in kernel uses xmpyu FP instruction (qgis mail) -> bad! -> add linker check?
* convert from bootmem to memblock, see: 0e46c1115f5816949220d62dd3ff04aa68e7ac6b, https://0xax.gitbooks.io/linux-insides/content/mm/linux-mm-1.html
+
** https://patchwork.kernel.org/project/linux-parisc/patch/YWSSVwQ9tc9YaC+f@ls3530/
* DONE: Add cfi_startproc / cfi_endproc to asm code, see: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49deffe0b0e4c2030696c7a6fd680bacf4761069
+
** 64bit kernel still needs patches (or gcc fix from Dave)
* Find reproducer for gcc bug in espresso: https://buildd.debian.org/status/fetch.php?pkg=espresso&arch=hppa&ver=5.4.0%2Bdfsg-5&stamp=1474830912
+
* 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
 +
** same for abinit: https://buildd.debian.org/status/fetch.php?pkg=abinit&arch=hppa&ver=9.6.1-1&stamp=1634170491&raw=0
 +
/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
 +
* 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.
 +
** [1] https://github.com/rust-lang/rust/pull/87260
 +
** [2] https://github.com/rust-lang/rust/pull/87260#issuecomment-930221503
 +
** [3] https://github.com/rust-lang/rust/pull/87260#issuecomment-930223504
 +
** [4] https://github.com/rust-lang/libc/pull/2414
 +
* Clean up drivers/parisc/iosapic.c  and drivers/parisc/sba_iommu.c (Mail from Carlos Bilbao)
 +
* QEMU issues:
 +
** Track [https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970460 qemu-user: trashes argv0 breaking multi-call binaries] QEMU bug.
 +
** 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.
 +
* parisc timers: convert to generic clockevent (Arnd Bergmann) - https://patchwork.kernel.org/project/linux-parisc/patch/20201008154651.1901126-14-arnd@arndb.de/
 +
* qemu: Check "HPPA support for IGNITE-UX install discs" for HP Logic Analyzer 16700A (Mail from Keith Monahan <keith@techtravels.org> Sept 2020)
 +
** ncr53c710 driver from amiga: https://github.com/tonioni/WinUAE/blob/master/qemuvga/lsi53c710.cpp
 +
* Check Sven's HPMC patch, against https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b845f66f78bf42a4ce98e5cfe0e94fab41dd0742
 +
* 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.
 +
* STARTED by Sven: Fix kexec on PA8800/PA8900 CPUs: how to restart the CPUs on these systems?
 +
* Add TOC handler - CC_MC_OS_TOC_MISSING on c8000 (Sven)
 +
** Enable TOC button on c8000, sending TOC via IPMI interface "toc s",
 +
* upgrade libgcc via:
 +
** apt install -f -o Dpkg::Options::="--force-overwrite"
 +
** see: https://raphaelhertzog.com/2011/08/01/understanding-dpkgs-file-overwrite-error/
 +
* qemu
 +
** Check "IGNITE-UX install discs" from Keith Monahan (09/20)
 +
** Add pvpanic kernel support? - maybe?
 +
** STARTED: Finish LASI and 82596 NIC for QEMU -> https://github.com/hdeller/qemu-hppa/commits/lasi
 +
* DONE: autofs/automounter is broken, patch sent to list, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892953
 +
* Probably fixed: Fix stifb kernel hangs with latest kernels (4.9ff)
 +
* Add BPF assember implementation
 +
* Enable SPARSEMEM_VMEMMAP_ENABLE
 +
* ONGOING: Enable UBSAN and fix fallouts
 +
* STARTED: implement CONFIG_VMAP_STACK "virtually mapped stacks and thread_info cleanup" -> https://lwn.net/Articles/693026/
 +
* PALO - add regular rewind & load to avoid tftp boot timing issues. See mail from Frank Schreiner "PALO issues" (Dec 2018).
 +
* STARTED: Implement kernel VDSO support - https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/log/?h=vdso
 +
** [https://lore.kernel.org/linux-parisc/4544A34A.6080700@tausq.org/ Randolphs patch]
 +
** [[Vdso]]
 +
*** Get rid of executable stack, maybe use gateway page instead for signal returns?
 +
*** 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
 +
* 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/
 +
* 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
 +
* MAYBE: Implement DCACHE_WORD_ACCESS in kernel (Complaint from Linus)
 +
* 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)
 +
* gcc optimizations:
 +
** _mcount can be optimized (smaller) by not subtracting offset)
 +
** check if we can use -fentry from gcc for _mcount optimization
 +
** put PLABELS into read-only section (gcc function pa_reloc_rw_mask() needs modification, see "section mismatches" mails, 11.09.2017)
 +
* 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
 +
* convert unaligned handler to use get_user/put_user inline asm
 +
* 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
 
* unaligned warning (from glibc) when running apt-get: https://sourceware.org/bugzilla/show_bug.cgi?id=20243
 
* unaligned warning (from glibc) when running apt-get: https://sourceware.org/bugzilla/show_bug.cgi?id=20243
* rebuild packages with kernel 4.7 which has better timing: ismrmrd, haskell-http-conduit, ...
 
* DONE: Add HAVE_ARCH_HARDENED_USERCOPY - see commit 73d35887e24da77e8d1321b2e92bd9b9128e2fc2
 
* Add GENERIC_CLOCKEVENTS to kernel config?  Fixes maybe clock_getres()
 
* Remove TIF_RESTORE_SIGMASK define -> https://patchwork.kernel.org/patch/9230443/, "virtually mapped stacks and thread_info cleanup" -> https://lwn.net/Articles/693026/
 
* add wiki page about kernel cross-compiling
 
 
* kernel work
 
* kernel work
** STARTED: add dynamic ftrace support - http://git.kernel.org/cgit/linux/kernel/git/deller/parisc-linux.git/commit/?h=ftrace-dynamic&id=059645d9dadbd802d0487d1b8ab9b9269df18e0e
 
** STARTED: fix up __ro_after_init: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d09e356ad06a8b6f5cceabf7c6cf05fdb62b46e5
 
** update defconfigs
 
** Fix 32bit SMP kernel (crashes at bootup during memory initialization)
 
** Why does CONFIG_DEBUG_TIMEKEEPING=y does not work?
 
** Fix kernel writing core file, gdb reporting: BFD: Warning: /tmp/core.http.1655.ls3011.1465554447 is truncated: expected core file size >= 2187264, found: 2121728.
 
** 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)
 
 
** trace irq flags - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=24131a61ec8c2d83431cb818281d3c9db986ab08
 
** trace irq flags - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=24131a61ec8c2d83431cb818281d3c9db986ab08
 
** Add core-objtool for parisc - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=26660a4046b171a752e72a1dd32153230234fe3a
 
** Add core-objtool for parisc - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=26660a4046b171a752e72a1dd32153230234fe3a
 
** ALPHA processor port:
 
** ALPHA processor port:
 
*** Add https://lkml.org/lkml/2007/8/14/259 aboot patch
 
*** Add https://lkml.org/lkml/2007/8/14/259 aboot patch
 +
*** 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,  
 
*** 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,  
** Implement kernel VDSO support
+
*** qemu-user bug: https://gitlab.com/qemu-project/qemu/-/issues/494
** Add KASLR (Kernel Address Layout Randomization, ARCH_HAS_ELF_RANDOMIZE, arch_mmap_rnd() and such) - like arm64
+
 
** convert irq handling to use CONFIG_IRQ_DOMAIN_HIERARCHY (serial port problem, action handler msising when registering irq)
 
** 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)
 
** Due to very bad performance running multiple copies of dot program (Dave)
 
*** In vtk6 debian package, adding DOT_NUM_THREADS = 1 helps.
 
*** 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
 
*** 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
 
*** 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
** use CONFIG_COMPAT_BINFMT_ELF and get rid of arch/parisc/kernel/binfmt_elf32.c
 
** implement kexec syscall
 
 
** Implement ltrace on hppa
 
** Implement ltrace on hppa
 
** SLAB breaks, SLUB works, why? Mail from Guy Martin.
 
** SLAB breaks, SLUB works, why? Mail from Guy Martin.
** sparsemem: http://lwn.net/Articles/439472/ -> convert to sparsemem (http://lwn.net/Articles/440056/), patch available from James
 
** 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).
 
 
** 3.14 partly: return ((unsigned long) mapping >> 7) & ((SHMLBA >> PAGE_SHIFT) - 1); in arch/parisc/kernel/sys_parisc.c
 
** 3.14 partly: return ((unsigned long) mapping >> 7) & ((SHMLBA >> PAGE_SHIFT) - 1); in arch/parisc/kernel/sys_parisc.c
** 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
 
 
** implement .con_font_set (consw) in sticon.c (to be able to change fonts at runtime)
 
** implement .con_font_set (consw) in sticon.c (to be able to change fonts at runtime)
 
** why does mc hangs when exiting on sticon ?
 
** why does mc hangs when exiting on sticon ?
 
** better implementation to get stack pointer (in return_address(), in stack checker in irq.c, ...)
 
** better implementation to get stack pointer (in return_address(), in stack checker in irq.c, ...)
** 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/
 
  
 
* Kernel: Hard to solve outstanding issues
 
* Kernel: Hard to solve outstanding issues
Line 51: Line 92:
  
 
* Kernel: still missing Linux kernel development (no patches available yet):
 
* Kernel: still missing Linux kernel development (no patches available yet):
** Fix kernel to load -fpie compiled programs not at 0x400000
 
 
** maybe implement transparent huge pages (due to cache coherency technically only possible on PA8500-PA8700 CPUs, not possible on PA8800-PA8900 CPUs)
 
** 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
** 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
 
** arch/parisc/kernel/sys_parisc.c -> use SYSCALL_ALIAS() -> maybe
** implement libnuma kernel support to report on C8000 one socket with 2 cores.
 
** 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  
 
** 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).
 
** Visualize FX support (will probably never happen!)
 
** Visualize FX support (will probably never happen!)
 
** 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.
 
** 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
 
* Debian packages / Userspace work
 
** IMPORTANT: fix OpenJDK - fixes required in zeroport (stack grows up!).
 
** IMPORTANT: fix OpenJDK - fixes required in zeroport (stack grows up!).
** Fix qemu
 
** 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
 
* userspace
Line 79: Line 118:
 
** glib2.0 -- 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
 
** 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
** libgadu - testsuite fails probably due to missing pthread cancellation in glibc.
 
 
** 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
 
** 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
** heimdal suceeds by increasing timeout for iprop test to 120 seconds.
 
** cupt - build errors
 
 
** libqb - testsuite error
 
** libqb - testsuite error
** libsoup2.4 -- testsuite error
 
 
** DONE: capnproto - testsuite was wrong: PARISC uses mips-floatingpoint NANs - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=781787
 
** 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
 
** teach "blkid" about palo partition
Line 92: Line 127:
 
** glibc: add backtrace() function, problems when building elfutils package: http://buildd.debian-ports.org/status/package.php?p=elfutils&suite=sid
 
** 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()
 
** 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
+
** 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
** gdb crashes Kernel - http://permalink.gmane.org/gmane.linux.ports.parisc/5406
+
 
** debian-cd to use xorriso
 
** debian-cd to use xorriso
 
** debian-cd: do not compress kernel.
 
** debian-cd: do not compress kernel.
 
    
 
    
 
* 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
 
  
 
== Upstream PA-RISC-related kernel patch history ==
 
== 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 183: Line 220:
 
** 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+)
Line 299: Line 336:
 
** [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=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)
 
** [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''']
 +
** [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]
 +
** [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]
  
 
== Debian kernel and userspace programs ==
 
== Debian kernel and userspace programs ==
Line 307: Line 838:
 
** DONE: add gzip-support (allow loading gzipped vmlinux files)
 
** DONE: add gzip-support (allow loading gzipped vmlinux files)
 
** DONE: 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 / Generic Kernel bugs fixed
+
Debian kernel / Generic Kernel bugs fixed
 
** DONE: Fixed 64bit SMP kernel & sticon on machines with more than 4GB RAM (Kernel 3.12)
 
** 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: Lots of syscall fixes regarding compat kernel
Line 328: Line 861:
 
** DONE: Simplify get_user()/put_user() with regard to %sr0/%sr2 usage.
 
** DONE: Simplify get_user()/put_user() with regard to %sr0/%sr2 usage.
 
** DONE: Add tracehook support (needed for seccomp testcases, gdb, ...)
 
** 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''']
  
 
* Debian installer:
 
* Debian installer:
Line 343: Line 896:
 
*** [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]
 
*** [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: 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:
 
* glibc:
Line 361: Line 915:
 
** DONE: port openmpi package: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776730
 
** 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 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
  
== ABI breakages (HP-UX support) ==
+
QEMU:
* 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
+
* DONE: Add kernel fw_cfg support (drivers/firmware/qemu_fw_cfg.c)
* Changed RTSIGMIN to 32 (from 37) - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f25df2eff5b25f52c139d3ff31bc883eee9a0ab
+
 
** debian glibc report: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=766605
+
== ABI breakages (e.g. dropped HP-UX support) ==
** debian kernel bug report: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=766635
+
* [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)
 
** 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:
 
** rebuild of following packages needed:
 
*** unxz-utils: rebuild unxz to fix usage of SIGXFSZ
 
*** unxz-utils: rebuild unxz to fix usage of SIGXFSZ
Line 374: Line 933:
 
*** (maybe) gcc-4.9 which links against libgc...? (affects objc related code only)
 
*** (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
 
*** 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 ==
 
== Considerations between Debian unstable and Debian Jessie release ==
Line 406: Line 971:
 
** DONE: DNS takeover by Thibaut Varenet on 11/11/2013 - see: http://article.gmane.org/gmane.linux.ports.parisc/5478
 
** 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
 
** 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
 +
 +
== 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 =
 
= Testsuites, kernel and userspace testing tools =
Line 415: Line 983:
 
= 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 427: Line 994:
  
 
* ns87415 dma doesn't work reliably on suckyio-systems
 
* ns87415 dma doesn't work reliably on suckyio-systems
 
 
* 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 09:32, 14 October 2021

Contents

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

[edit] Status & TODO 2021-10-14

/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.
    • arch/parisc/kernel/sys_parisc.c -> use SYSCALL_ALIAS() -> maybe
  • 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).
    • Visualize FX support (will probably never happen!)
    • 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

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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