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[3/4] x86/cpu: Enable SD_ASYM_PACKING for PKG Domain on AMD Processors

Message ID 20241021175509.2079-4-mario.limonciello@amd.com
State Superseded
Headers show
Series Adjustments for AMD heterogeneous designs | expand

Commit Message

Mario Limonciello Oct. 21, 2024, 5:55 p.m. UTC 
From: Perry Yuan <perry.yuan@amd.com>

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@amd.com>
Co-developed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
Rename to match correct x86 feature name
---
 arch/x86/kernel/smpboot.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 766f092dab80b..b5a8f0891135b 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;
 }