KVM: x86 emulator: implement rdmsr and wrmsr

Allow real-mode emulation of rdmsr and wrmsr.  This allows smp Windows to
boot, presumably for its sipi trampoline.

Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 05f0418f2195..bcbe6835beb4 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -1517,7 +1517,7 @@ EXPORT_SYMBOL_GPL(kvm_get_msr_common);
  * Returns 0 on success, non-0 otherwise.
  * Assumes vcpu_load() was already called.
  */
-static int get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
+int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
 {
         return kvm_arch_ops->get_msr(vcpu, msr_index, pdata);
 }
@@ -1595,7 +1595,7 @@ EXPORT_SYMBOL_GPL(kvm_set_msr_common);
  * Returns 0 on success, non-0 otherwise.
  * Assumes vcpu_load() was already called.
  */
-static int set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
+int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
 {
         return kvm_arch_ops->set_msr(vcpu, msr_index, data);
 }
@@ -2133,7 +2133,7 @@ static __init void kvm_init_msr_list(void)
  */
 static int do_set_msr(struct kvm_vcpu *vcpu, unsigned index, u64 *data)
 {
-        return set_msr(vcpu, index, *data);
+        return kvm_set_msr(vcpu, index, *data);
 }
 
 /*
@@ -2617,7 +2617,7 @@ static long kvm_vcpu_ioctl(struct file *filp,
                 break;
         }
         case KVM_GET_MSRS:
-                r = msr_io(vcpu, argp, get_msr, 1);
+                r = msr_io(vcpu, argp, kvm_get_msr, 1);
                 break;
         case KVM_SET_MSRS:
                 r = msr_io(vcpu, argp, do_set_msr, 0);