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Message-ID: <20241015213645.1476-11-mario.limonciello@amd.com>
Date: Tue, 15 Oct 2024 16:36:41 -0500
From: Mario Limonciello <mario.limonciello@....com>
To: Borislav Petkov <bp@...en8.de>, Hans de Goede <hdegoede@...hat.com>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
CC: <x86@...nel.org>, "Gautham R . Shenoy" <gautham.shenoy@....com>, "Mario
Limonciello" <mario.limonciello@....com>, Perry Yuan <perry.yuan@....com>,
<linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
<linux-pm@...r.kernel.org>, <platform-driver-x86@...r.kernel.org>, "Shyam
Sundar S K" <Shyam-sundar.S-k@....com>
Subject: [PATCH v3 10/14] x86/cpu: Enable SD_ASYM_PACKING for DIE Domain on AMD Processors
From: Perry Yuan <perry.yuan@....com>
Enable the SD_ASYM_PACKING domain flag for the DIE 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@....com>
Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
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 766f092dab80..c01bb75d0375 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_HETERO_CORE_TOPOLOGY))
+ return x86_sched_itmt_flags();
return 0;
}
--
2.43.0
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