kernel.git/arch/mips/Kconfig, branch linux-5.18.y

MIPS: Fix build error for loongson64 and sgi-ip27

2022-03-24T08:45:15Z

Select HAVE_ARCH_NODEDATA_EXTENSION for loongson64 to fix build error when CONFIG_NUMA=y: mips64el-unknown-linux-gnu-ld: mm/page_alloc.o: in function `free_area_init': (.init.text+0x1714): undefined reference to `node_data' mips64el-unknown-linux-gnu-ld: (.init.text+0x1730): undefined reference to `node_data' Also, select HAVE_ARCH_NODEDATA_EXTENSION for sgi-ip27 to fix build error: mips64el-unknown-linux-gnu-ld: mm/page_alloc.o: in function `free_area_init': page_alloc.c:(.init.text+0x1ba8): undefined reference to `node_data' mips64el-unknown-linux-gnu-ld: page_alloc.c:(.init.text+0x1bcc): undefined reference to `node_data' mips64el-unknown-linux-gnu-ld: page_alloc.c:(.init.text+0x1be4): undefined reference to `node_data' mips64el-unknown-linux-gnu-ld: page_alloc.c:(.init.text+0x1bf4): undefined reference to `node_data' Signed-off-by: Feiyang Chen Reviewed-by: Huacai Chen Signed-off-by: Thomas Bogendoerfer

MIPS: Only use current_stack_pointer on GCC

2022-03-14T14:02:53Z

Unfortunately, Clang did not have support for "sp" as a global register definition, and was crashing after the addition of current_stack_pointer. This has been fixed in Clang 14, but earlier Clang versions need to avoid this code, so add a versioned test and revert back to the open-coded asm instances. Fixes Clang build error: fatal error: error in backend: Invalid register name global variable Fixes: 200ed341b864 ("mips: Implement "current_stack_pointer"") Reported-by: Nathan Chancellor Reviewed-by: Nathan Chancellor Link: https://lore.kernel.org/lkml/YikTQRql+il3HbrK@dev-arch.thelio-3990X Cc: Thomas Bogendoerfer Cc: Marc Zyngier Cc: Guenter Roeck Cc: Yanteng Si Cc: linux-mips@vger.kernel.org Signed-off-by: Kees Cook Reviewed-by: Nick Desaulniers Signed-off-by: Thomas Bogendoerfer

mips: remove reference to "newer Loongson-3"

2022-03-07T12:16:13Z

Newest Loongson-3 processors have moved to use LoongArch architecture. Sadly, the LL/SC issue is still existing on both latest Loongson-3 processors using MIPS64 (Loongson-3A4000) and LoongArch (Loongson-3A5000). As it's very unlikely there will be new Loongson-3 processors using MIPS64, let's stop people from false hoping. Signed-off-by: Xi Ruoyao Cc: Huacai Chen Signed-off-by: Thomas Bogendoerfer

mips: Implement "current_stack_pointer"

2022-03-01T15:57:55Z

To follow the existing per-arch conventions replace open-coded uses of asm "sp" as "current_stack_pointer". This will let it be used in non-arch places (like HARDENED_USERCOPY). Cc: Thomas Bogendoerfer Cc: Marc Zyngier Cc: Guenter Roeck Cc: Mark Rutland Cc: Yanteng Si Cc: linux-mips@vger.kernel.org Signed-off-by: Kees Cook Signed-off-by: Thomas Bogendoerfer

MIPS: Remove TX39XX support

2022-03-01T09:07:22Z

No (active) developer owns this hardware, so let's remove Linux support. Signed-off-by: Thomas Bogendoerfer Acked-by: Guenter Roeck Reviewed-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Acked-by: Atsushi Nemoto

MIPS: remove asm/war.h

2022-02-22T08:35:49Z

The major part for workaround handling has already moved to config options. This change replaces the remaining defines by already available config options and gets rid of war.h Signed-off-by: Thomas Bogendoerfer

mips: Enable KCSAN

2022-02-07T17:31:57Z

This patch enables KCSAN for the 64-bit version. Updated rules for the incompatible compilation units (vdso, boot/compressed). Signed-off-by: Nemanja Rakovic Signed-off-by: Thomas Bogendoerfer

MIPS: Loongson{2ef,64}: Wrap -mno-branch-likely with cc-option

2022-02-07T17:30:12Z

This flag is not supported by clang, which results in a warning: clang-14: warning: argument unused during compilation: '-mno-branch-likely' [-Wunused-command-line-argument] This breaks cc-option, which adds -Werror to make this warning fatal and catch flags that are not supported. Wrap this flag in cc-option so that it does not cause cc-option to fail, which can cause randconfigs to be really noisy, due to warnings not getting disabled that should be. Additionally, move the cc-option check to Kconfig so that the check is done at configuration time, rather than build time, as builds with no configuration change will be quicker because the cc-option call will not need to happen in those instances. Suggested-by: Nick Desaulniers Signed-off-by: Nathan Chancellor Signed-off-by: Thomas Bogendoerfer

Merge tag 'bitmap-5.17-rc1' of git://github.com/norov/linux

2022-01-23T04:20:44Z

Pull bitmap updates from Yury Norov: - introduce for_each_set_bitrange() - use find_first_*_bit() instead of find_next_*_bit() where possible - unify for_each_bit() macros * tag 'bitmap-5.17-rc1' of git://github.com/norov/linux: vsprintf: rework bitmap_list_string lib: bitmap: add performance test for bitmap_print_to_pagebuf bitmap: unify find_bit operations mm/percpu: micro-optimize pcpu_is_populated() Replace for_each_*_bit_from() with for_each_*_bit() where appropriate find: micro-optimize for_each_{set,clear}_bit() include/linux: move for_each_bit() macros from bitops.h to find.h cpumask: replace cpumask_next_* with cpumask_first_* where appropriate tools: sync tools/bitmap with mother linux all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate cpumask: use find_first_and_bit() lib: add find_first_and_bit() arch: remove GENERIC_FIND_FIRST_BIT entirely include: move find.h from asm_generic to linux bitops: move find_bit_*_le functions from le.h to find.h bitops: protect find_first_{,zero}_bit properly

Merge branch 'akpm' (patches from Andrew)

2022-01-20T08:41:01Z

Merge more updates from Andrew Morton: "55 patches. Subsystems affected by this patch series: percpu, procfs, sysctl, misc, core-kernel, get_maintainer, lib, checkpatch, binfmt, nilfs2, hfs, fat, adfs, panic, delayacct, kconfig, kcov, and ubsan" * emailed patches from Andrew Morton : (55 commits) lib: remove redundant assignment to variable ret ubsan: remove CONFIG_UBSAN_OBJECT_SIZE kcov: fix generic Kconfig dependencies if ARCH_WANTS_NO_INSTR lib/Kconfig.debug: make TEST_KMOD depend on PAGE_SIZE_LESS_THAN_256KB btrfs: use generic Kconfig option for 256kB page size limit arch/Kconfig: split PAGE_SIZE_LESS_THAN_256KB from PAGE_SIZE_LESS_THAN_64KB configs: introduce debug.config for CI-like setup delayacct: track delays from memory compact Documentation/accounting/delay-accounting.rst: add thrashing page cache and direct compact delayacct: cleanup flags in struct task_delay_info and functions use it delayacct: fix incomplete disable operation when switch enable to disable delayacct: support swapin delay accounting for swapping without blkio panic: remove oops_id panic: use error_report_end tracepoint on warnings fs/adfs: remove unneeded variable make code cleaner FAT: use io_schedule_timeout() instead of congestion_wait() hfsplus: use struct_group_attr() for memcpy() region nilfs2: remove redundant pointer sbufs fs/binfmt_elf: use PT_LOAD p_align values for static PIE const_structs.checkpatch: add frequently used ops structs ...