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KVM: SVM: forbid guest to execute monitor/mwait

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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>
This commit is contained in:
Joerg Roedel
2007-03-21 19:47:00 +01:00
committed by Avi Kivity
parent 0e5bf0d0e4
commit 916ce2360f
2 changed files with 11 additions and 1 deletions
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6
drivers/kvm/svm.h
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@ -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