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KVM: SVM: Emulate next_rip svm feature

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This patch implements the emulations of the svm next_rip
feature in the nested svm implementation in kvm.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Joerg Roedel 2010-07-27 18:14:21 +02:00 committed by Avi Kivity
parent 3f6a9d1693
commit 7a190667bb
1 changed files with 7 additions and 1 deletions
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8
arch/x86/kvm/svm.c
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@ -1918,6 +1918,7 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
nested_vmcb->control.exit_info_2 = vmcb->control.exit_info_2; nested_vmcb->control.exit_info_2 = vmcb->control.exit_info_2;
nested_vmcb->control.exit_int_info = vmcb->control.exit_int_info; nested_vmcb->control.exit_int_info = vmcb->control.exit_int_info;
nested_vmcb->control.exit_int_info_err = vmcb->control.exit_int_info_err; nested_vmcb->control.exit_int_info_err = vmcb->control.exit_int_info_err;
nested_vmcb->control.next_rip = vmcb->control.next_rip;
/* /*
* If we emulate a VMRUN/#VMEXIT in the same host #vmexit cycle we have * If we emulate a VMRUN/#VMEXIT in the same host #vmexit cycle we have
@ -3360,7 +3361,12 @@ static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
entry->ebx = 8; /* Lets support 8 ASIDs in case we add proper entry->ebx = 8; /* Lets support 8 ASIDs in case we add proper
ASID emulation to nested SVM */ ASID emulation to nested SVM */
entry->ecx = 0; /* Reserved */ entry->ecx = 0; /* Reserved */
entry->edx = 0; /* Do not support any additional features */ entry->edx = 0; /* Per default do not support any
additional features */
/* Support next_rip if host supports it */
if (svm_has(SVM_FEATURE_NRIP))
entry->edx |= SVM_FEATURE_NRIP;
break; break;
} }