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Subject[PATCH v3 3/4] KVM/X86: add MSR_IA32_BNDCFGS to msrs_to_save
Date
From d1992769911f34cb319fe638d32ae604bd2a6ce8 Mon Sep 17 00:00:00 2001
From: Liu Jinsong <jinsong.liu@intel.com>
Date: Fri, 13 Dec 2013 02:33:08 +0800
Subject: [PATCH v3 3/4] KVM/X86: add MSR_IA32_BNDCFGS to msrs_to_save

Add MSR_IA32_BNDCFGS to msrs_to_save, and corresponding logic
to kvm_get/set_msr().

Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
---
arch/x86/include/asm/vmx.h | 2 ++
arch/x86/kvm/vmx.c | 6 ++++++
arch/x86/kvm/x86.c | 2 +-
3 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 1bf4681..47b4c88 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -175,6 +175,8 @@ enum vmcs_field {
GUEST_PDPTR2_HIGH = 0x0000280f,
GUEST_PDPTR3 = 0x00002810,
GUEST_PDPTR3_HIGH = 0x00002811,
+ GUEST_BNDCFGS = 0x00002812,
+ GUEST_BNDCFGS_HIGH = 0x00002813,
HOST_IA32_PAT = 0x00002c00,
HOST_IA32_PAT_HIGH = 0x00002c01,
HOST_IA32_EFER = 0x00002c02,
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6d7d9ad..a6a7556 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2465,6 +2465,9 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
case MSR_IA32_SYSENTER_ESP:
data = vmcs_readl(GUEST_SYSENTER_ESP);
break;
+ case MSR_IA32_BNDCFGS:
+ data = vmcs_readl(GUEST_BNDCFGS);
+ break;
case MSR_TSC_AUX:
if (!to_vmx(vcpu)->rdtscp_enabled)
return 1;
@@ -2524,6 +2527,9 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
case MSR_IA32_SYSENTER_ESP:
vmcs_writel(GUEST_SYSENTER_ESP, data);
break;
+ case MSR_IA32_BNDCFGS:
+ vmcs_writel(GUEST_BNDCFGS, data);
+ break;
case MSR_IA32_TSC:
kvm_write_tsc(vcpu, msr_info);
break;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1657ca2..8ca2269 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -852,7 +852,7 @@ static u32 msrs_to_save[] = {
MSR_CSTAR, MSR_KERNEL_GS_BASE, MSR_SYSCALL_MASK, MSR_LSTAR,
#endif
MSR_IA32_TSC, MSR_IA32_CR_PAT, MSR_VM_HSAVE_PA,
- MSR_IA32_FEATURE_CONTROL
+ MSR_IA32_FEATURE_CONTROL, MSR_IA32_BNDCFGS
};

static unsigned num_msrs_to_save;
--
1.7.1

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