linux-kernel - [PATCH 2/7] x86/msr: add definitions for indirect branch predictor MSRs

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Date:   Mon,  8 Jan 2018 19:08:40 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     jmattson@...gle.com, aliguori@...zon.com, thomas.lendacky@....com,
        dwmw@...zon.co.uk, bp@...en8.de
Subject: [PATCH 2/7] x86/msr: add definitions for indirect branch predictor MSRs

KVM will start using them soon.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/include/asm/msr-index.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 03ffde6217d0..ec08f1d8d39b 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -39,6 +39,11 @@
 
 /* Intel MSRs. Some also available on other CPUs */
 
+#define MSR_IA32_SPEC_CTRL		0x00000048
+
+#define MSR_IA32_PRED_CMD		0x00000049
+#define FEATURE_SET_IBPB		(1UL << 0)
+
 #define MSR_PPIN_CTL			0x0000004e
 #define MSR_PPIN			0x0000004f
 
-- 
1.8.3.1