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2022-06-09Documentation/features: Update the arch support status filesZheng Zengkai6-0/+6
The arch support status files don't match reality as of v5.19-rc1, use the features-refresh.sh to refresh all the arch-support.txt files in place. The main effect is to add entries for the new loong architecture. Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> Link: https://lore.kernel.org/r/20220609025656.143460-1-zhengzengkai@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-04-04Merge branch 'remove-h8300' of git://git.infradead.org/users/hch/misc into ↵Arnd Bergmann6-6/+0
asm-generic * 'remove-h8300' of git://git.infradead.org/users/hch/misc: remove the h8300 architecture This is clearly the least actively maintained architecture we have at the moment, and probably the least useful. It is now the only one that does not support MMUs at all, and most of the boards only support 4MB of RAM, out of which the defconfig kernel needs more than half just for .text/.data. Guenter Roeck did the original patch to remove the architecture in 2013 after it had already been obsolete for a while, and Yoshinori Sato brought it back in a much more modern form in 2015. Looking at the git history since the reinstantiation, it's clear that almost all commits in the tree are build fixes or cross-architecture cleanups: $ git log --no-merges --format=%an v4.5.. arch/h8300/ | sort | uniq -c | sort -rn | head -n 12 25 Masahiro Yamada 18 Christoph Hellwig 14 Mike Rapoport 9 Arnd Bergmann 8 Mark Rutland 7 Peter Zijlstra 6 Kees Cook 6 Ingo Molnar 6 Al Viro 5 Randy Dunlap 4 Yury Norov Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-03-07nds32: Remove the architectureAlan Kao6-6/+0
The nds32 architecture, also known as AndeStar V3, is a custom 32-bit RISC target designed by Andes Technologies. Support was added to the kernel in 2016 as the replacement RISC-V based V5 processors were already announced, and maintained by (current or former) Andes employees. As explained by Alan Kao, new customers are now all using RISC-V, and all known nds32 users are already on longterm stable kernels provided by Andes, with no development work going into mainline support any more. While the port is still in a reasonably good shape, it only gets worse over time without active maintainers, so it seems best to remove it before it becomes unusable. As always, if it turns out that there are mainline users after all, and they volunteer to maintain the port in the future, the removal can be reverted. Link: https://lore.kernel.org/linux-mm/YhdWNLUhk+x9RAzU@yamatobi.andestech.com/ Link: https://lore.kernel.org/lkml/20220302065213.82702-1-alankao@andestech.com/ Link: https://www.andestech.com/en/products-solutions/andestar-architecture/ Signed-off-by: Alan Kao <alankao@andestech.com> [arnd: rewrite changelog to provide more background] Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-02-23remove the h8300 architectureChristoph Hellwig6-6/+0
Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-12-17ARM: 9158/1: leave it to core code to manage thread_info::cpuArd Biesheuvel1-1/+1
Since commit bcf9033e5449 ("sched: move CPU field back into thread_info if THREAD_INFO_IN_TASK=y"), the CPU field in thread_info went back to being managed by the core code, so we no longer have to keep it in sync in arch code. While at it, mark THREAD_INFO_IN_TASK as done for ARM in the documentation. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
2021-11-01parisc: Move thread_info into task structHelge Deller1-1/+1
This implements the CONFIG_THREAD_INFO_IN_TASK option. With this change: - before thread_info was part of the stack and located at the beginning of the stack - now the thread_info struct is moved and located inside the task_struct structure - the stack is allocated and handled like the major other platforms - drop the cpu field of thread_info and use instead the one in task_struct Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Sven Schnelle <svens@stackframe.org>
2021-07-15Documentation/features: Add THREAD_INFO_IN_TASK feature matrixIngo Molnar1-0/+32
Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/YN2nhV5F0hBVNPuX@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-02-25Documentation: features: remove c6x referencesArnd Bergmann5-5/+0
The references to arch/c6x are obsolete now that the architecture is gone. Remove them. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20210225142841.3385428-1-arnd@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-08-07Merge tag 'riscv-for-linus-5.9-mw0' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: "We have a lot of new kernel features for this merge window: - ARCH_SUPPORTS_ATOMIC_RMW, to allow OSQ locks to be enabled - The ability to enable NO_HZ_FULL - Support for enabling kcov, kmemleak, stack protector, and VM debugging - JUMP_LABEL support There are also a handful of cleanups" * tag 'riscv-for-linus-5.9-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (24 commits) riscv: disable stack-protector for vDSO RISC-V: Fix build warning for smpboot.c riscv: fix build warning of mm/pageattr riscv: Fix build warning for mm/init RISC-V: Setup exception vector early riscv: Select ARCH_HAS_DEBUG_VM_PGTABLE riscv: Use generic pgprot_* macros from <linux/pgtable.h> mm: pgtable: Make generic pgprot_* macros available for no-MMU riscv: Cleanup unnecessary define in asm-offset.c riscv: Add jump-label implementation riscv: Support R_RISCV_ADD64 and R_RISCV_SUB64 relocs Replace HTTP links with HTTPS ones: RISC-V riscv: Add STACKPROTECTOR supported riscv: Fix typo in asm/hwcap.h uapi header riscv: Add kmemleak support riscv: Allow building with kcov coverage riscv: Enable context tracking riscv: Support irq_work via self IPIs riscv: Enable LOCKDEP_SUPPORT & fixup TRACE_IRQFLAGS_SUPPORT riscv: Fixup lockdep_assert_held with wrong param cpu_running ...
2020-07-30riscv: Add jump-label implementationEmil Renner Berthing1-1/+1
Add jump-label implementation based on the ARM64 version and add CONFIG_JUMP_LABEL=y to the defconfigs. Signed-off-by: Emil Renner Berthing <kernel@esmil.dk> Reviewed-by: Björn Töpel <bjorn.topel@gmail.com> Tested-by: Björn Töpel <bjorn.topel@gmail.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-07-01arch: remove unicore32 portMike Rapoport5-5/+0
The unicore32 port do not seem maintained for a long time now, there is no upstream toolchain that can create unicore32 binaries and all the links to prebuilt toolchains for unicore32 are dead. Even compilers that were available are not supported by the kernel anymore. Guenter Roeck says: I have stopped building unicore32 images since v4.19 since there is no available compiler that is still supported by the kernel. I am surprised that support for it has not been removed from the kernel. Remove unicore32 port. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Guenter Roeck <linux@roeck-us.net>
2020-05-25Documentation/features: Refresh the arch support status filesBjörn Töpel1-1/+1
I was manually editing the arch-support.txt for eBPF-JIT, when I realized the refresh script [1] has not been run for a while. Let's fix that, so that the entries are more up-to-date. [1] Documentation/features/scripts/features-refresh.sh Signed-off-by: Björn Töpel <bjorn.topel@gmail.com> Link: https://lore.kernel.org/r/20200523191135.21889-1-bjorn.topel@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-01-13ARC: update feature support for jump-labelsVineet Gupta1-1/+1
ARC jum-label support was added in 5.5rc1 but we missed updating the feature list Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2019-10-20xtensa: update arch featuresMax Filippov1-1/+1
xtensa now supports tracehook, queued spinlocks and rwlocks. Update corresponding Documentation/features entries. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2019-08-03parisc: Update feature listSven Schnelle1-1/+1
Add jump labels to the list of supported features. Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Helge Deller <deller@gmx.de>
2019-01-07Documentation/features: Add csky kernel featuresGuo Ren5-0/+5
core/ cBPF-JIT : TODO | core/ eBPF-JIT : TODO | core/ generic-idle-thread : ok | core/ jump-labels : TODO | core/ tracehook : ok | debug/ KASAN : TODO | debug/ gcov-profile-all : TODO | debug/ kgdb : TODO | debug/ kprobes-on-ftrace : TODO | debug/ kprobes : TODO | debug/ kretprobes : TODO | debug/ optprobes : TODO | debug/ stackprotector : TODO | debug/ uprobes : TODO | debug/ user-ret-profiler : TODO | io/ dma-contiguous : ok | locking/ cmpxchg-local : TODO | locking/ lockdep : TODO | locking/ queued-rwlocks : ok | locking/ queued-spinlocks : TODO | locking/ rwsem-optimized : TODO | perf/ kprobes-event : TODO | perf/ perf-regs : TODO | perf/ perf-stackdump : TODO | sched/ membarrier-sync-core : TODO | sched/ numa-balancing : .. | seccomp/ seccomp-filter : TODO | time/ arch-tick-broadcast : TODO | time/ clockevents : ok | time/ context-tracking : TODO | time/ irq-time-acct : TODO | time/ modern-timekeeping : ok | time/ virt-cpuacct : TODO | vm/ ELF-ASLR : TODO | vm/ PG_uncached : TODO | vm/ THP : .. | vm/ batch-unmap-tlb-flush: TODO | vm/ huge-vmap : TODO | vm/ ioremap_prot : TODO | vm/ numa-memblock : .. | vm/ pte_special : TODO | Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Arnd Bergmann <arnd@arndb.de>
2018-12-20xtensa: implement jump_label supportMax Filippov1-1/+1
Use 3-byte 'nop' and 'j' instructions that are always present. Don't let assembler mark a spot right after patchable 'j' instruction as unreachable and later put literals or padding bytes there. Add separate implementations of patch_text for SMP and UP cases, avoiding use of atomics on UP. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-05-08Documentation/features/core: Add arch support status files for 'cBPF-JIT' ↵Andrea Parri2-3/+36
and 'eBPF-JIT' Commit 6077776b5908e split 'HAVE_BPF_JIT' into cBPF and eBPF variant. Adds arch support status files for the new variants, and removes the status file corresponding to 'HAVE_BPT_JIT'. The new status matrices were auto-generated using the script 'features-refresh.sh'. Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-05-08Documentation/features: Refresh the arch support status files in placeAndrea Parri4-1/+9
Now that the script 'features-refresh.sh' is available, uses this script to refresh all the arch-support.txt files in place. Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-03-26Documentation: arch-support: remove obsolete architecturesArnd Bergmann4-24/+0
A number of architecture ports are obsolete and getting dropped, so we no longer want to track the respective features. We already removed the lines for metag and mn10300, this does the same edits for all the others. For the remaining 21 architectures, this shows how many are known to implement each given feature: 19 time/modern-timekeeping/arch-support.txt 19 time/clockevents/arch-support.txt 15 core/tracehook/arch-support.txt 14 core/generic-idle-thread/arch-support.txt 13 locking/lockdep/arch-support.txt 12 io/dma-api-debug/arch-support.txt 11 debug/kgdb/arch-support.txt 10 time/virt-cpuacct/arch-support.txt 9 debug/kretprobes/arch-support.txt 9 debug/kprobes/arch-support.txt 8 vm/THP/arch-support.txt 8 vm/pte_special/arch-support.txt 8 vm/numa-memblock/arch-support.txt 8 io/sg-chain/arch-support.txt 7 perf/kprobes-event/arch-support.txt 7 locking/rwsem-optimized/arch-support.txt 7 debug/gcov-profile-all/arch-support.txt 7 core/jump-labels/arch-support.txt 7 core/BPF-JIT/arch-support.txt 6 vm/ELF-ASLR/arch-support.txt 6 time/context-tracking/arch-support.txt 6 seccomp/seccomp-filter/arch-support.txt 6 debug/stackprotector/arch-support.txt 5 time/irq-time-acct/arch-support.txt 5 io/dma-contiguous/arch-support.txt 5 debug/uprobes/arch-support.txt 4 vm/ioremap_prot/arch-support.txt 4 time/arch-tick-broadcast/arch-support.txt 4 perf/perf-stackdump/arch-support.txt 4 perf/perf-regs/arch-support.txt 3 debug/KASAN/arch-support.txt 2 vm/PG_uncached/arch-support.txt 2 vm/huge-vmap/arch-support.txt 2 sched/numa-balancing/arch-support.txt 2 sched/membarrier-sync-core/arch-support.txt 2 locking/cmpxchg-local/arch-support.txt 2 debug/optprobes/arch-support.txt 2 debug/kprobes-on-ftrace/arch-support.txt 1 vm/TLB/arch-support.txt 1 locking/queued-spinlocks/arch-support.txt 1 locking/queued-rwlocks/arch-support.txt 1 debug/user-ret-profiler/arch-support.txt 0 lib/strncasecmp/arch-support.txt Note that the list does not include riscv or nds32 yet, these still need to be added. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-09mn10300: Remove the architectureDavid Howells4-4/+0
Remove the MN10300 arch as the hardware is defunct. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David Howells <dhowells@redhat.com> cc: Masahiro Yamada <yamada.masahiro@socionext.com> cc: linux-am33-list@redhat.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-02-22docs: Remove remaining references to metagJames Hogan4-4/+0
Remove any remaining references to the Meta architecture in Documentation/, primarily from Documentation/features/. Signed-off-by: James Hogan <jhogan@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-metag@vger.kernel.org Cc: linux-doc@vger.kernel.org
2017-08-07docs/features: parisc implements tracehookJames Hogan1-1/+1
Since commit 64e2a42bca12 ("parisc: Add ARCH_TRACEHOOK and regset support") in v4.7, parisc selects HAVE_ARCH_TRACEHOOK, so update its entry in Documentation/features from TODO to ok. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-05-01docs: remove all references to AVR32 architectureHans-Christian Noren Egtvedt4-4/+0
The AVR32 architecture support has been removed from the Linux kernel, hence remove all references to it from Documentation. Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Signed-off-by: Håvard Skinnemoen <hskinnemoen@gmail.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2015-06-03Documentation/features/core: Add feature description and arch support status ↵Ingo Molnar1-0/+40
file for 'BPF-JIT' Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: <linux-kernel@vger.kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-03Documentation/features/core: Add feature description and arch support status ↵Ingo Molnar1-0/+40
file for 'generic-idle-thread' Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: <linux-kernel@vger.kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-03Documentation/features/core: Add feature description and arch support status ↵Ingo Molnar1-0/+40
file for 'jump-labels' Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: <linux-kernel@vger.kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-03Documentation/features/core: Add feature description and arch support status ↵Ingo Molnar1-0/+40
file for 'tracehook' Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: <linux-kernel@vger.kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-04 00:33:55 +0000