1 files changed, 22 insertions, 0 deletions

diff --git a/arch/x86/kvm/kvm_cache_regs.h b/arch/x86/kvm/kvm_cache_regs.h
index 975bb45329a..3377d53fcd3 100644
--- a/arch/x86/kvm/kvm_cache_regs.h
+++ b/arch/x86/kvm/kvm_cache_regs.h
@@ -73,6 +73,13 @@ static inline ulong kvm_read_cr4_bits(struct kvm_vcpu *vcpu, ulong mask)
         return vcpu->arch.cr4 & mask;
 }
 
+static inline ulong kvm_read_cr3(struct kvm_vcpu *vcpu)
+{
+        if (!test_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail))
+                kvm_x86_ops->decache_cr3(vcpu);
+        return vcpu->arch.cr3;
+}
+
 static inline ulong kvm_read_cr4(struct kvm_vcpu *vcpu)
 {
         return kvm_read_cr4_bits(vcpu, ~0UL);
@@ -84,4 +91,19 @@ static inline u64 kvm_read_edx_eax(struct kvm_vcpu *vcpu)
                 | ((u64)(kvm_register_read(vcpu, VCPU_REGS_RDX) & -1u) << 32);
 }
 
+static inline void enter_guest_mode(struct kvm_vcpu *vcpu)
+{
+        vcpu->arch.hflags |= HF_GUEST_MASK;
+}
+
+static inline void leave_guest_mode(struct kvm_vcpu *vcpu)
+{
+        vcpu->arch.hflags &= ~HF_GUEST_MASK;
+}
+
+static inline bool is_guest_mode(struct kvm_vcpu *vcpu)
+{
+        return vcpu->arch.hflags & HF_GUEST_MASK;
+}
+
 #endif