KVM: add MSR based hypercall API

[powerpc.git] / drivers / kvm / vmx.c

diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index d1198e2..0198d40 100644 (file)
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -1469,6 +1469,18 @@ static int handle_io(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
        return 0;
 }
 
+static void
+vmx_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
+{
+       /*
+        * Patch in the VMCALL instruction:
+        */
+       hypercall[0] = 0x0f;
+       hypercall[1] = 0x01;
+       hypercall[2] = 0xc1;
+       hypercall[3] = 0xc3;
+}
+
 static int handle_cr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 {
        u64 exit_qualification;
@@ -2064,6 +2076,7 @@ static struct kvm_arch_ops vmx_arch_ops = {
        .run = vmx_vcpu_run,
        .skip_emulated_instruction = skip_emulated_instruction,
        .vcpu_setup = vmx_vcpu_setup,
+       .patch_hypercall = vmx_patch_hypercall,
 };
 
 static int __init vmx_init(void)