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Diffstat (limited to 'arch/x86/kvm/svm/svm_onhyperv.h')
-rw-r--r--arch/x86/kvm/svm/svm_onhyperv.h23
1 files changed, 19 insertions, 4 deletions
diff --git a/arch/x86/kvm/svm/svm_onhyperv.h b/arch/x86/kvm/svm/svm_onhyperv.h
index 45faf84476ce..786d46d73a8e 100644
--- a/arch/x86/kvm/svm/svm_onhyperv.h
+++ b/arch/x86/kvm/svm/svm_onhyperv.h
@@ -6,6 +6,8 @@
#ifndef __ARCH_X86_KVM_SVM_ONHYPERV_H__
#define __ARCH_X86_KVM_SVM_ONHYPERV_H__
+#include <asm/mshyperv.h>
+
#if IS_ENABLED(CONFIG_HYPERV)
#include "kvm_onhyperv.h"
@@ -15,6 +17,14 @@ static struct kvm_x86_ops svm_x86_ops;
int svm_hv_enable_l2_tlb_flush(struct kvm_vcpu *vcpu);
+static inline bool svm_hv_is_enlightened_tlb_enabled(struct kvm_vcpu *vcpu)
+{
+ struct hv_vmcb_enlightenments *hve = &to_svm(vcpu)->vmcb->control.hv_enlightenments;
+
+ return ms_hyperv.nested_features & HV_X64_NESTED_ENLIGHTENED_TLB &&
+ !!hve->hv_enlightenments_control.enlightened_npt_tlb;
+}
+
static inline void svm_hv_init_vmcb(struct vmcb *vmcb)
{
struct hv_vmcb_enlightenments *hve = &vmcb->control.hv_enlightenments;
@@ -30,11 +40,11 @@ static inline void svm_hv_init_vmcb(struct vmcb *vmcb)
hve->hv_enlightenments_control.msr_bitmap = 1;
}
-static inline void svm_hv_hardware_setup(void)
+static inline __init void svm_hv_hardware_setup(void)
{
if (npt_enabled &&
ms_hyperv.nested_features & HV_X64_NESTED_ENLIGHTENED_TLB) {
- pr_info("kvm: Hyper-V enlightened NPT TLB flush enabled\n");
+ pr_info(KBUILD_MODNAME ": Hyper-V enlightened NPT TLB flush enabled\n");
svm_x86_ops.tlb_remote_flush = hv_remote_flush_tlb;
svm_x86_ops.tlb_remote_flush_with_range =
hv_remote_flush_tlb_with_range;
@@ -43,7 +53,7 @@ static inline void svm_hv_hardware_setup(void)
if (ms_hyperv.nested_features & HV_X64_NESTED_DIRECT_FLUSH) {
int cpu;
- pr_info("kvm: Hyper-V Direct TLB Flush enabled\n");
+ pr_info(KBUILD_MODNAME ": Hyper-V Direct TLB Flush enabled\n");
for_each_online_cpu(cpu) {
struct hv_vp_assist_page *vp_ap =
hv_get_vp_assist_page(cpu);
@@ -80,11 +90,16 @@ static inline void svm_hv_update_vp_id(struct vmcb *vmcb, struct kvm_vcpu *vcpu)
}
#else
+static inline bool svm_hv_is_enlightened_tlb_enabled(struct kvm_vcpu *vcpu)
+{
+ return false;
+}
+
static inline void svm_hv_init_vmcb(struct vmcb *vmcb)
{
}
-static inline void svm_hv_hardware_setup(void)
+static inline __init void svm_hv_hardware_setup(void)
{
}