The following commit has been merged into the x86/cpu branch of tip:
Commit-ID: b0979e53645825a38f814ca5d3d09aed2745911d
Gitweb: https://git.kernel.org/tip/b0979e53645825a38f814ca5d3d09aed2745911d
Author: Perry Yuan <perry.yuan@xxxxxxx>
AuthorDate: Fri, 25 Oct 2024 12:14:57 -05:00
Committer: Borislav Petkov (AMD) <bp@xxxxxxxxx>
CommitterDate: Fri, 25 Oct 2024 20:43:22 +02:00
x86/cpu: Enable SD_ASYM_PACKING for PKG domain on AMD
Enable the SD_ASYM_PACKING domain flag for the PKG domain on AMD heterogeneous
processors. This flag is beneficial for processors with one or more CCDs and
relies on x86_sched_itmt_flags().
Signed-off-by: Perry Yuan <perry.yuan@xxxxxxx>
Co-developed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@xxxxxxx>
Link: https://lore.kernel.org/r/20241025171459.1093-4-mario.limonciello@xxxxxxx
---
arch/x86/kernel/smpboot.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 766f092..b5a8f08 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -497,8 +497,9 @@ static int x86_cluster_flags(void)
static int x86_die_flags(void)
{
- if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU))
- return x86_sched_itmt_flags();
+ if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU) ||
+ cpu_feature_enabled(X86_FEATURE_AMD_HETEROGENEOUS_CORES))
+ return x86_sched_itmt_flags();
return 0;
}
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