6.12-stable review patch. If anyone has any objections, please let me know.
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From: Perry Yuan perry.yuan@amd.com
[ Upstream commit b0979e53645825a38f814ca5d3d09aed2745911d ]
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 Signed-off-by: Borislav Petkov (AMD) bp@alien8.de Reviewed-by: Gautham R. Shenoy gautham.shenoy@amd.com Link: https://lore.kernel.org/r/20241025171459.1093-4-mario.limonciello@amd.com Stable-dep-of: e1bc02646527 ("x86/topology: Use x86_sched_itmt_flags for PKG domain unconditionally") Signed-off-by: Sasha Levin sashal@kernel.org --- 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 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; }