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| author |   Avi Kivity <avi@qumranet.com> | 2007-10-28 16:11:58 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-11-08 12:05:45 +0200 |
| commit | cf5a94d1331b411b84414c13e43f578260942d6b (patch) | |
| tree | bf7a2a4e432b478e4ed417eac9489c8613e71237 /drivers/kvm | |
| parent | KVM: x86 emulator: invd instruction (diff) | |
| download | linux-dev-cf5a94d1331b411b84414c13e43f578260942d6b.tar.xz linux-dev-cf5a94d1331b411b84414c13e43f578260942d6b.zip | |
KVM: SVM: Intercept the 'invd' and 'wbinvd' instructions
'invd' can destroy host data, and 'wbinvd' allows the guest to induce
long (milliseconds) latencies.
Noted by Ben Serebrin.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm')
| -rw-r--r-- | drivers/kvm/svm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index 7376805c88ab..7a6eead63a6b 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -494,6 +494,7 @@ static void init_vmcb(struct vmcb *vmcb) */ /* (1ULL << INTERCEPT_SELECTIVE_CR0) | */ (1ULL << INTERCEPT_CPUID) | + (1ULL << INTERCEPT_INVD) | (1ULL << INTERCEPT_HLT) | (1ULL << INTERCEPT_INVLPGA) | (1ULL << INTERCEPT_IOIO_PROT) | @@ -507,6 +508,7 @@ static void init_vmcb(struct vmcb *vmcb) (1ULL << INTERCEPT_STGI) | (1ULL << INTERCEPT_CLGI) | (1ULL << INTERCEPT_SKINIT) | + (1ULL << INTERCEPT_WBINVD) | (1ULL << INTERCEPT_MONITOR) | (1ULL << INTERCEPT_MWAIT); @@ -1247,6 +1249,7 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm, [SVM_EXIT_VINTR] = interrupt_window_interception, /* [SVM_EXIT_CR0_SEL_WRITE] = emulate_on_interception, */ [SVM_EXIT_CPUID] = cpuid_interception, + [SVM_EXIT_INVD] = emulate_on_interception, [SVM_EXIT_HLT] = halt_interception, [SVM_EXIT_INVLPG] = emulate_on_interception, [SVM_EXIT_INVLPGA] = invalid_op_interception, @@ -1261,6 +1264,7 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm, [SVM_EXIT_STGI] = invalid_op_interception, [SVM_EXIT_CLGI] = invalid_op_interception, [SVM_EXIT_SKINIT] = invalid_op_interception, + [SVM_EXIT_WBINVD] = emulate_on_interception, [SVM_EXIT_MONITOR] = invalid_op_interception, [SVM_EXIT_MWAIT] = invalid_op_interception, }; |