diff options
| author | Dave Hansen <dave.hansen@linux.intel.com> | 2024-12-13 23:50:30 +0300 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2024-12-18 17:17:30 +0300 |
| commit | 262fba55708b60a063b30d103963477dc5026f8c (patch) | |
| tree | b591a6e4989bc5252366cd9bc2c837f858c6e237 /drivers/idle | |
| parent | 8bd6821c9cf3b81d3c07a94fa4e3f97a3cc7b724 (diff) | |
| download | linux-262fba55708b60a063b30d103963477dc5026f8c.tar.xz | |
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 'drivers/idle')
| -rw-r--r-- | drivers/idle/intel_idle.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index 5d8ed1a68447..efa32d28ed93 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -2317,9 +2317,6 @@ static int __init intel_idle_init(void) return -ENODEV; } - if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF) - return -ENODEV; - cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &mwait_substates); if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) || |