diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-05-13 19:16:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-05-13 19:16:02 -0700 |
| commit | e76f69b91e1ad11e9df68ba6ca4b4ad2bf39915c (patch) | |
| tree | 1efdf68d60b4336b233b9bd570d73beed72d2f50 /arch/x86/Kconfig | |
| parent | eabb6297abd3115220c8072e463780efc549bc97 (diff) | |
| parent | 93cfa544cf9e4771def159002304a2e366cd97af (diff) | |
| download | linux-e76f69b91e1ad11e9df68ba6ca4b4ad2bf39915c.tar.gz linux-e76f69b91e1ad11e9df68ba6ca4b4ad2bf39915c.tar.bz2 linux-e76f69b91e1ad11e9df68ba6ca4b4ad2bf39915c.zip | |
Merge tag 'x86-percpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 percpu updates from Ingo Molnar:
- Expand the named address spaces optimizations down to
GCC 9.1+.
- Re-enable named address spaces with sanitizers for GCC 13.3+
- Generate better this_percpu_xchg_op() code
- Introduce raw_cpu_read_long() to reduce ifdeffery
- Simplify the x86_this_cpu_test_bit() et al macros
- Address Sparse warnings
- Misc cleanups & fixes
* tag 'x86-percpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/percpu: Introduce raw_cpu_read_long() to reduce ifdeffery
x86/percpu: Rewrite x86_this_cpu_test_bit() and friends as macros
x86/percpu: Fix x86_this_cpu_variable_test_bit() asm template
x86/percpu: Re-enable named address spaces with sanitizers for GCC 13.3+
x86/percpu: Use __force to cast from __percpu address space
x86/percpu: Do not use this_cpu_read_stable_8() for 32-bit targets
x86/percpu: Unify arch_raw_cpu_ptr() defines
x86/percpu: Enable named address spaces for GCC 9.1+
x86/percpu: Re-enable named address spaces with KASAN for GCC 13.3+
x86/percpu: Move raw_percpu_xchg_op() to a better place
x86/percpu: Convert this_percpu_xchg_op() from asm() to C code, to generate better code
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 40565564a625..fe196f49d278 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2418,18 +2418,20 @@ source "kernel/livepatch/Kconfig" endmenu config CC_HAS_NAMED_AS - def_bool CC_IS_GCC && GCC_VERSION >= 120100 + def_bool CC_IS_GCC && GCC_VERSION >= 90100 + +config CC_HAS_NAMED_AS_FIXED_SANITIZERS + def_bool CC_IS_GCC && GCC_VERSION >= 130300 config USE_X86_SEG_SUPPORT def_bool y depends on CC_HAS_NAMED_AS # - # -fsanitize=kernel-address (KASAN) is at the moment incompatible - # with named address spaces - see GCC PR sanitizer/111736. + # -fsanitize=kernel-address (KASAN) and -fsanitize=thread + # (KCSAN) are incompatible with named address spaces with + # GCC < 13.3 - see GCC PR sanitizer/111736. # - depends on !KASAN - # -fsanitize=thread (KCSAN) is also incompatible. - depends on !KCSAN + depends on !(KASAN || KCSAN) || CC_HAS_NAMED_AS_FIXED_SANITIZERS config CC_HAS_SLS def_bool $(cc-option,-mharden-sls=all) |