1 files changed, 44 insertions, 0 deletions

diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index e407ed3df817..d36fe237c665 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -75,10 +75,54 @@ static inline u32 bit(int bitno)
         return 1 << (bitno & 31);
 }
 
+static inline void vcpu_cache_mmio_info(struct kvm_vcpu *vcpu,
+                                        gva_t gva, gfn_t gfn, unsigned access)
+{
+        vcpu->arch.mmio_gva = gva & PAGE_MASK;
+        vcpu->arch.access = access;
+        vcpu->arch.mmio_gfn = gfn;
+}
+
+/*
+ * Clear the mmio cache info for the given gva,
+ * specially, if gva is ~0ul, we clear all mmio cache info.
+ */
+static inline void vcpu_clear_mmio_info(struct kvm_vcpu *vcpu, gva_t gva)
+{
+        if (gva != (~0ul) && vcpu->arch.mmio_gva != (gva & PAGE_MASK))
+                return;
+
+        vcpu->arch.mmio_gva = 0;
+}
+
+static inline bool vcpu_match_mmio_gva(struct kvm_vcpu *vcpu, unsigned long gva)
+{
+        if (vcpu->arch.mmio_gva && vcpu->arch.mmio_gva == (gva & PAGE_MASK))
+                return true;
+
+        return false;
+}
+
+static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
+{
+        if (vcpu->arch.mmio_gfn && vcpu->arch.mmio_gfn == gpa >> PAGE_SHIFT)
+                return true;
+
+        return false;
+}
+
 void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
 void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
 int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);
 
 void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data);
 
+int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt,
+        gva_t addr, void *val, unsigned int bytes,
+        struct x86_exception *exception);
+
+int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt,
+        gva_t addr, void *val, unsigned int bytes,
+        struct x86_exception *exception);
+
 #endif