diff mbox series

[04/13] x86/cpufeatures: Add CPUID feature bit for virtualized IBS

Message ID 20230904095347.14994-5-manali.shukla@amd.com (mailing list archive)
State New, archived
Headers show
Series Implement support for IBS virtualization | expand

Commit Message

Manali Shukla Sept. 4, 2023, 9:53 a.m. UTC 
From: Santosh Shukla <santosh.shukla@amd.com>

The virtualized IBS (VIBS) feature allows the guest to collect IBS
samples without exiting the guest.

Presence of the VIBS feature is indicated via CPUID function
0x8000000A_EDX[26].

Signed-off-by: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Manali Shukla <manali.shukla@amd.com>
---
 arch/x86/include/asm/cpufeatures.h | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 2e4624fa6e4e..8f92fa6d8319 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -374,6 +374,7 @@ 
 #define X86_FEATURE_X2AVIC		(15*32+18) /* Virtual x2apic */
 #define X86_FEATURE_V_SPEC_CTRL		(15*32+20) /* Virtual SPEC_CTRL */
 #define X86_FEATURE_VNMI		(15*32+25) /* Virtual NMI */
+#define X86_FEATURE_VIBS		(15*32+26) /* "" Virtual IBS */
 #define X86_FEATURE_EXTLVT		(15*32+27) /* "" EXTLVT */
 #define X86_FEATURE_SVME_ADDR_CHK	(15*32+28) /* "" SVME addr check */