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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2024-12-13 12:50:30 -0800 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2024-12-18 06:17:30 -0800 |
| commit | 262fba55708b60a063b30d103963477dc5026f8c (patch) | |
| tree | b591a6e4989bc5252366cd9bc2c837f858c6e237 /arch/x86/kernel/smpboot.c | |
| parent | x86/cpu: Use MWAIT leaf definition (diff) | |
| download | linux-262fba55708b60a063b30d103963477dc5026f8c.tar.gz linux-262fba55708b60a063b30d103963477dc5026f8c.zip | |
x86/cpu: Remove unnecessary MwAIT leaf checks
The CPUID leaf dependency checker will remove X86_FEATURE_MWAIT if
the CPUID level is below the required level (CPUID_MWAIT_LEAF).
Thus, if you check X86_FEATURE_MWAIT you do not need to also
check the CPUID level.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20241213205030.9B42B458%40davehans-spike.ostc.intel.com
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 52b0d308eed9..116c46f9ecbb 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1292,8 +1292,6 @@ static inline void mwait_play_dead(void) return; if (!this_cpu_has(X86_FEATURE_CLFLUSH)) return; - if (__this_cpu_read(cpu_info.cpuid_level) < CPUID_MWAIT_LEAF) - return; eax = CPUID_MWAIT_LEAF; ecx = 0; |