From: Mihai Donțu <[email protected]>
This is needed for the KVMI_EVENT_MSR event.
Signed-off-by: Mihai Donțu <[email protected]>
Co-developed-by: Nicușor Cîțu <[email protected]>
Signed-off-by: Nicușor Cîțu <[email protected]>
Signed-off-by: Adalbert Lazăr <[email protected]>
---
arch/x86/include/asm/kvm_host.h | 2 ++
arch/x86/kvm/svm.c | 11 +++++++++++
arch/x86/kvm/vmx/vmx.c | 10 ++++++++++
3 files changed, 23 insertions(+)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 2136f273645a..d8c61cc301fa 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1060,6 +1060,8 @@ struct kvm_x86_ops {
void (*update_bp_intercept)(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);
+ void (*control_msr_intercept)(struct kvm_vcpu *vcpu, unsigned int msr,
+ int type, bool enable);
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,
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 174ced633b60..21f02d92af78 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -7339,6 +7339,16 @@ static inline bool svm_desc_intercepted(struct kvm_vcpu
*vcpu)
get_intercept(svm, INTERCEPT_LOAD_TR));
}
+static void svm_control_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr,
+ int type, bool enable)
+{
+ const struct vcpu_svm *svm = to_svm(vcpu);
+ u32 *msrpm = is_guest_mode(vcpu) ? svm->nested.msrpm :
+ svm->msrpm;
+
+ set_msr_interception(vcpu, msrpm, msr, type, !enable);
+}
+
static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.cpu_has_kvm_support = has_svm,
.disabled_by_bios = is_disabled,
@@ -7370,6 +7380,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.get_msr_feature = svm_get_msr_feature,
.get_msr = svm_get_msr,
.set_msr = svm_set_msr,
+ .control_msr_intercept = svm_control_msr_intercept,
.msr_write_intercepted = msr_write_intercepted,
.get_segment_base = svm_get_segment_base,
.get_segment = svm_get_segment,
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index e6878097d736..7a61427af370 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7806,6 +7806,15 @@ static bool vmx_desc_intercepted(struct kvm_vcpu *vcpu)
return !!(secondary_exec_controls_get(vmx) & SECONDARY_EXEC_DESC);
}
+static void vmx_control_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr,
+ int type, bool enable)
+{
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+ unsigned long *msr_bitmap = vmx->vmcs01.msr_bitmap;
+
+ vmx_set_intercept_for_msr(vcpu, msr_bitmap, msr, type, enable);
+}
+
static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
@@ -7834,6 +7843,7 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.get_msr_feature = vmx_get_msr_feature,
.get_msr = vmx_get_msr,
.set_msr = vmx_set_msr,
+ .control_msr_intercept = vmx_control_msr_intercept,
.msr_write_intercepted = msr_write_intercepted,
.get_segment_base = vmx_get_segment_base,
.get_segment = vmx_get_segment,
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