Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cf5a94d1331b411b84414c13e43f578260942d6b
Commit: cf5a94d1331b411b84414c13e43f578260942d6b
Parent: 651a3e29b3d19418d7a8a9787906061f9be7cc5f
Author: Avi Kivity <[EMAIL PROTECTED]>
AuthorDate: Sun Oct 28 16:11:58 2007 +0200
Committer: Avi Kivity <[EMAIL PROTECTED]>
CommitDate: Thu Nov 8 12:05:45 2007 +0200
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 <[EMAIL PROTECTED]>
---
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 7376805..7a6eead 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,
};
-
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