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| author | Adam Stylinski <kungfujesus06@gmail.com> | 2025-08-16 11:35:33 -0400 |
|---|---|---|
| committer | Hans Kristian Rosbach <hk-github@circlestorm.org> | 2025-08-18 22:56:21 +0200 |
| commit | f8bcae0d8d15284a87322f3cebf6d794bedf64be (patch) | |
| tree | fc61a0531a1a18143720712a2753f5344d262586 | |
| parent | 3a52db3d3725be75a098e92a11879f037d6278f9 (diff) | |
| download | Project-Tick-f8bcae0d8d15284a87322f3cebf6d794bedf64be.tar.gz Project-Tick-f8bcae0d8d15284a87322f3cebf6d794bedf64be.zip | |
Check the proper bit for BMI2
We were actually checking for BMI1 support here. This is unlikely to have
caused any issues because to date there have not been any x86 CPUs with
AVX2 support but no BMI2 support.
| -rw-r--r-- | arch/x86/x86_features.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/x86_features.c b/arch/x86/x86_features.c index c94a129235..bed1df3d12 100644 --- a/arch/x86/x86_features.c +++ b/arch/x86/x86_features.c @@ -101,7 +101,7 @@ void Z_INTERNAL x86_check_features(struct x86_cpu_features *features) { cpuidex(7, 0, &eax, &ebx, &ecx, &edx); // check BMI2 bit - features->has_bmi2 = ebx & 0x8; + features->has_bmi2 = ebx & 0x100; // check AVX2 bit if the OS supports saving YMM registers if (features->has_os_save_ymm) { |