From: Nicușor Cîțu <nicu.citu@xxxxxxxxxx>
This function will be used to check if the write access for a specific
MSR is already intercepted. The information will be used to restore the
interception status when the introspection tool is no longer interested
in that MSR.
Signed-off-by: Nicușor Cîțu <nicu.citu@xxxxxxxxxx>
Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/kvm-x86-ops.h | 1 +
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm/svm.c | 1 +
arch/x86/kvm/vmx/vmx.c | 1 +
4 files changed, 4 insertions(+)
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h
index 30d01c9ed31b..90e913408c6e 100644
--- a/arch/x86/include/asm/kvm-x86-ops.h
+++ b/arch/x86/include/asm/kvm-x86-ops.h
@@ -127,6 +127,7 @@ KVM_X86_OP(cr3_write_intercepted)
KVM_X86_OP(desc_ctrl_supported)
KVM_X86_OP(control_desc_intercept)
KVM_X86_OP(desc_intercepted)
+KVM_X86_OP(msr_write_intercepted)
#undef KVM_X86_OP
#undef KVM_X86_OP_NULL
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 1182b0fbd245..1e77cb825ec4 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1331,6 +1331,7 @@ struct kvm_x86_ops {
void (*update_exception_bitmap)(struct kvm_vcpu *vcpu);
int (*get_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
+ bool (*msr_write_intercepted)(struct kvm_vcpu *vcpu, u32 msr);
u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
void (*get_segment)(struct kvm_vcpu *vcpu,
struct kvm_segment *var, int seg);
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index c1b1e5cdd508..31109961183e 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4689,6 +4689,7 @@ static struct kvm_x86_ops svm_x86_ops __initdata = {
.get_msr_feature = svm_get_msr_feature,
.get_msr = svm_get_msr,
.set_msr = svm_set_msr,
+ .msr_write_intercepted = msr_write_intercepted,
.get_segment_base = svm_get_segment_base,
.get_segment = svm_get_segment,
.set_segment = svm_set_segment,
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 8f34b19827a3..b036aed96912 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7637,6 +7637,7 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = {
.get_msr_feature = vmx_get_msr_feature,
.get_msr = vmx_get_msr,
.set_msr = vmx_set_msr,
+ .msr_write_intercepted = msr_write_intercepted,
.get_segment_base = vmx_get_segment_base,
.get_segment = vmx_get_segment,
.set_segment = vmx_set_segment,
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