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[v9,03/13] x86/msr-index: define AMD heterogeneous CPU related MSR

Message ID 20250423014631.3224338-4-superm1@kernel.org
State New
Headers show
Series [v9,01/13] Documentation: x86: Add AMD Hardware Feedback Interface documentation | expand

Commit Message

Mario Limonciello April 23, 2025, 1:46 a.m. UTC 
From: Perry Yuan <perry.yuan@amd.com>

Introduces new MSR registers for AMD hardware feedback support.
These registers enable the system to provide workload classification
and configuration capabilities.

Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
 arch/x86/include/asm/msr-index.h | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index ac21dc19dde21..0c761033aa714 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -724,6 +724,11 @@ 
 #define MSR_AMD64_PERF_CNTR_GLOBAL_CTL		0xc0000301
 #define MSR_AMD64_PERF_CNTR_GLOBAL_STATUS_CLR	0xc0000302
 
+/* AMD Hardware Feedback Support MSRs */
+#define AMD_WORKLOAD_CLASS_CONFIG      0xc0000500
+#define AMD_WORKLOAD_CLASS_ID          0xc0000501
+#define AMD_WORKLOAD_HRST              0xc0000502
+
 /* AMD Last Branch Record MSRs */
 #define MSR_AMD64_LBR_SELECT			0xc000010e