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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-20 19:44:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-20 19:44:19 -0800 |
| commit | 317d4f459393e27b3efedf571bd9e78a23fcd2ed (patch) | |
| tree | ed9c133af037d51773aa16a11df8fa04cfa12148 /tools | |
| parent | ae821d2107e378bb086a02afcce82d0f43c29a6f (diff) | |
| parent | 02a16aa13574c8526beadfc9ae8cc9b66315fa2d (diff) | |
| download | linux-317d4f459393e27b3efedf571bd9e78a23fcd2ed.tar.bz2 | |
Merge tag 'x86_misc_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 misc updates from Borislav Petkov:
- Complete the MSR write filtering by applying it to the MSR ioctl
interface too.
- Other misc small fixups.
* tag 'x86_misc_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/MSR: Filter MSR writes through X86_IOC_WRMSR_REGS ioctl too
selftests/fpu: Fix debugfs_simple_attr.cocci warning
selftests/x86: Use __builtin_ia32_read/writeeflags
x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/x86/helpers.h | 24 |
1 files changed, 4 insertions, 20 deletions
diff --git a/tools/testing/selftests/x86/helpers.h b/tools/testing/selftests/x86/helpers.h index f5ff2a2615df..4ef42c4559a9 100644 --- a/tools/testing/selftests/x86/helpers.h +++ b/tools/testing/selftests/x86/helpers.h @@ -6,36 +6,20 @@ static inline unsigned long get_eflags(void) { - unsigned long eflags; - - asm volatile ( #ifdef __x86_64__ - "subq $128, %%rsp\n\t" - "pushfq\n\t" - "popq %0\n\t" - "addq $128, %%rsp" + return __builtin_ia32_readeflags_u64(); #else - "pushfl\n\t" - "popl %0" + return __builtin_ia32_readeflags_u32(); #endif - : "=r" (eflags) :: "memory"); - - return eflags; } static inline void set_eflags(unsigned long eflags) { - asm volatile ( #ifdef __x86_64__ - "subq $128, %%rsp\n\t" - "pushq %0\n\t" - "popfq\n\t" - "addq $128, %%rsp" + __builtin_ia32_writeeflags_u64(eflags); #else - "pushl %0\n\t" - "popfl" + __builtin_ia32_writeeflags_u32(eflags); #endif - :: "r" (eflags) : "flags", "memory"); } #endif /* __SELFTESTS_X86_HELPERS_H */ |