KVM: SVM: forbid guest to execute monitor/mwait

This patch forbids the guest to execute monitor/mwait instructions on
SVM. This is necessary because the guest can execute these instructions
if they are available even if the kvm cpuid doesn't report its
existence.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/kvm/svm.h b/drivers/kvm/svm.h
index df731c3fb588..5e93814400ce 100644
--- a/drivers/kvm/svm.h
+++ b/drivers/kvm/svm.h
@@ -44,6 +44,9 @@ enum {
         INTERCEPT_RDTSCP,
         INTERCEPT_ICEBP,
         INTERCEPT_WBINVD,
+        INTERCEPT_MONITOR,
+        INTERCEPT_MWAIT,
+        INTERCEPT_MWAIT_COND,
 };
 
 
@@ -298,6 +301,9 @@ struct __attribute__ ((__packed__)) vmcb {
 #define SVM_EXIT_RDTSCP         0x087
 #define SVM_EXIT_ICEBP          0x088
 #define SVM_EXIT_WBINVD         0x089
+#define SVM_EXIT_MONITOR        0x08a
+#define SVM_EXIT_MWAIT          0x08b
+#define SVM_EXIT_MWAIT_COND     0x08c
 #define SVM_EXIT_NPF            0x400
 
 #define SVM_EXIT_ERR            -1