kernel/linux.git/arch/csky/Kconfig, branch v6.4

Merge tag 'csky-for-linus-6.4' of https://github.com/c-sky/csky-linux

2023-05-04T19:25:05+00:00

Pull arch/csky updates from Guo Ren: - Remove CPU_TLB_SIZE config - Prevent spurious page faults * tag 'csky-for-linus-6.4' of https://github.com/c-sky/csky-linux: csky: mmu: Prevent spurious page faults csky: remove obsolete config CPU_TLB_SIZE

csky: drop ARCH_FORCE_MAX_ORDER

2023-04-18T23:29:44+00:00

The default value of ARCH_FORCE_MAX_ORDER matches the generic default defined in the MM code, the architecture does not support huge pages, so there is no need to keep ARCH_FORCE_MAX_ORDER option available. Drop it. Link: https://lkml.kernel.org/r/20230324052233.2654090-5-rppt@kernel.org Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Cc: Arnd Bergmann Cc: Catalin Marinas Cc: Christophe Leroy Cc: David Miller Cc: Dinh Nguyen Cc: Geert Uytterhoeven Cc: Guo Ren Cc: John Paul Adrian Glaubitz Cc: Max Filippov Cc: Michael Ellerman Cc: Rich Felker Cc: "Russell King (Oracle)" Cc: Will Deacon Cc: Yoshinori Sato Signed-off-by: Andrew Morton

csky: remove obsolete config CPU_TLB_SIZE

2023-04-06T03:07:10+00:00

Commit 9d35dc3006a9 ("csky: Revert mmu ASID mechanism") removes the only use of CONFIG_CPU_TLB_SIZE. Since then, this config has no effect and can be deleted. Remove the obsolete config CPU_TLB_SIZE. Signed-off-by: Lukas Bulwahn Signed-off-by: Guo Ren

mm, treewide: redefine MAX_ORDER sanely

2023-04-06T02:42:46+00:00

MAX_ORDER currently defined as number of orders page allocator supports: user can ask buddy allocator for page order between 0 and MAX_ORDER-1. This definition is counter-intuitive and lead to number of bugs all over the kernel. Change the definition of MAX_ORDER to be inclusive: the range of orders user can ask from buddy allocator is 0..MAX_ORDER now. [kirill@shutemov.name: fix min() warning] Link: https://lkml.kernel.org/r/20230315153800.32wib3n5rickolvh@box [akpm@linux-foundation.org: fix another min_t warning] [kirill@shutemov.name: fixups per Zi Yan] Link: https://lkml.kernel.org/r/20230316232144.b7ic4cif4kjiabws@box.shutemov.name [akpm@linux-foundation.org: fix underlining in docs] Link: https://lore.kernel.org/oe-kbuild-all/202303191025.VRCTk6mP-lkp@intel.com/ Link: https://lkml.kernel.org/r/20230315113133.11326-11-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov Reviewed-by: Michael Ellerman [powerpc] Cc: "Kirill A. Shutemov" Cc: Zi Yan Signed-off-by: Andrew Morton

Revert "csky: Add support for restartable sequence"

2022-11-11T09:59:28+00:00

This reverts commit 9866d141a0977ace974400bf1f793dfc163409ce. The csky rseq support has been merged without ever notifying the rseq maintainers, and without any of the required asssembler glue in the rseq selftests, which means it is entirely untested. It is also derived from a non-upstream riscv patch which has known bugs. The assembly part of this revert should be carefully reviewed by the architecture maintainer because it touches code which has changed since the merge of the reverted patch. The rseq selftests assembly glue should be introduced at the same time as the architecture rseq support. Without the presence of any test, I recommend reverting rseq support from csky for now. Link: https://lore.kernel.org/lkml/1257037909.25426.1626705790861.JavaMail.zimbra@efficios.com/ Signed-off-by: Mathieu Desnoyers Signed-off-by: Guo Ren Cc: Al Viro Cc: Linus Torvalds Cc: linux-csky@vger.kernel.org

csky: Kconfig: Fix spelling mistake "Meory" -> "Memory"

2022-10-22T03:52:51+00:00

There is a spelling mistake in a Kconfig option description. Fix it. Signed-off-by: Colin Ian King Signed-off-by: Guo Ren

csky: add arch support current_stack_pointer

2022-10-22T03:52:29+00:00

To follow the existing per-arch conventions, using "current_stack_pointer" to set sp. This will let it be used in non-arch places(like HARDENED_USERCOPY). Refer to the implementation of riscv commit fdecfea09328 ("riscv: Rename "sp_in_global" to "current_stack_pointer""). Link: https://lore.kernel.org/lkml/20220224060411.1855683-1-keescook@chromium.org/ Signed-off-by: Tong Tiangen Signed-off-by: Guo Ren

arch: mm: rename FORCE_MAX_ZONEORDER to ARCH_FORCE_MAX_ORDER

2022-09-12T03:25:56+00:00

This Kconfig option is used by individual arch to set its desired MAX_ORDER. Rename it to reflect its actual use. Link: https://lkml.kernel.org/r/20220815143959.1511278-1-zi.yan@sent.com Acked-by: Mike Rapoport Signed-off-by: Zi Yan Acked-by: Guo Ren [csky] Acked-by: Arnd Bergmann Acked-by: Catalin Marinas [arm64] Acked-by: Huacai Chen [LoongArch] Acked-by: Michael Ellerman [powerpc] Cc: Vineet Gupta Cc: Taichi Sugaya Cc: Neil Armstrong Cc: Qin Jian Cc: Guo Ren Cc: Geert Uytterhoeven Cc: Thomas Bogendoerfer Cc: Dinh Nguyen Cc: Christophe Leroy Cc: Yoshinori Sato Cc: "David S. Miller" Cc: Chris Zankel Cc: Ley Foon Tan Signed-off-by: Andrew Morton

Merge tag 'csky-for-linus-6.0-rc1' of https://github.com/c-sky/csky-linux

2022-08-04T22:27:20+00:00

Pull csky updates from Guo Ren: - Add jump-label implementation - Add qspinlock support - Enable ARCH_INLINE_READ*/WRITE*/SPIN* - Some fixups and a coding convention * tag 'csky-for-linus-6.0-rc1' of https://github.com/c-sky/csky-linux: csky: abiv1: Fixup compile error csky: cmpxchg: Coding convention for BUILD_BUG() csky: Enable ARCH_INLINE_READ*/WRITE*/SPIN* csky: Add qspinlock support csky: Add jump-label implementation csky: Move HEAD_TEXT_SECTION out of __init_begin-end csky: Correct position of _stext csky: Use the bitmap API to allocate bitmaps csky/kprobe: reclaim insn_slot on kprobe unregistration

csky: Enable ARCH_INLINE_READ/WRITE/SPIN*

2022-07-31T13:01:53+00:00

Enable ARCH_INLINE_READ*/WRITE*/SPIN* when !PREEMPTION, it is copied from arch/arm64. It could reduce procedure calls and improves performance. Signed-off-by: Guo Ren Signed-off-by: Guo Ren