From: Avi Kivity <avi@redhat.com>
Date: Tue, 12 Jun 2012 17:22:28 +0000 (+0300)
Subject: KVM: VMX: Improve error reporting during invalid guest state emulation
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=de5f70e0c65fcd0472a412a7a9690afcd3ee4526;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

KVM: VMX: Improve error reporting during invalid guest state emulation

If instruction emulation fails, report it properly to userspace.

Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index a62f92ab1be..c61eb34a39e 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -4996,8 +4996,12 @@ static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
 			goto out;
 		}
 
-		if (err != EMULATE_DONE)
+		if (err != EMULATE_DONE) {
+			vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+			vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
+			vcpu->run->internal.ndata = 0;
 			return 0;
+		}
 
 		if (signal_pending(current))
 			goto out;