From 7a190667bb316653cbb782fff95cfdfcf51ded45 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 27 Jul 2010 18:14:21 +0200 Subject: [PATCH] KVM: SVM: Emulate next_rip svm feature This patch implements the emulations of the svm next_rip feature in the nested svm implementation in kvm. Signed-off-by: Joerg Roedel Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/svm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 09704a0501d7..116e0341bf4c 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -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_int_info = vmcb->control.exit_int_info; 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 @@ -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 ASID emulation to nested SVM */ 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; } -- 2.20.1