| From 896707c212d440a6863ce0a3930c8a609e24497d Mon Sep 17 00:00:00 2001 |
| From: Maxim Levitsky <mlevitsk@redhat.com> |
| Date: Wed, 7 Jul 2021 15:50:59 +0300 |
| Subject: KVM: SVM: remove INIT intercept handler |
| |
| From: Maxim Levitsky <mlevitsk@redhat.com> |
| |
| commit 896707c212d440a6863ce0a3930c8a609e24497d upstream. |
| |
| Kernel never sends real INIT even to CPUs, other than on boot. |
| |
| Thus INIT interception is an error which should be caught |
| by a check for an unknown VMexit reason. |
| |
| On top of that, the current INIT VM exit handler skips |
| the current instruction which is wrong. |
| That was added in commit 5ff3a351f687 ("KVM: x86: Move trivial |
| instruction-based exit handlers to common code"). |
| |
| Fixes: 5ff3a351f687 ("KVM: x86: Move trivial instruction-based exit handlers to common code") |
| Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> |
| Message-Id: <20210707125100.677203-3-mlevitsk@redhat.com> |
| Cc: stable@vger.kernel.org |
| Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| arch/x86/kvm/svm/svm.c | 1 - |
| 1 file changed, 1 deletion(-) |
| |
| --- a/arch/x86/kvm/svm/svm.c |
| +++ b/arch/x86/kvm/svm/svm.c |
| @@ -3069,7 +3069,6 @@ static int (*const svm_exit_handlers[])( |
| [SVM_EXIT_INTR] = intr_interception, |
| [SVM_EXIT_NMI] = nmi_interception, |
| [SVM_EXIT_SMI] = smi_interception, |
| - [SVM_EXIT_INIT] = kvm_emulate_as_nop, |
| [SVM_EXIT_VINTR] = interrupt_window_interception, |
| [SVM_EXIT_RDPMC] = kvm_emulate_rdpmc, |
| [SVM_EXIT_CPUID] = kvm_emulate_cpuid, |
