linux-kernel - [PATCH 2/3] KVM: vmx: count exits to userspace during invalid guest emulation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1377610903-12356-3-git-send-email-pbonzini@redhat.com>
Date:	Tue, 27 Aug 2013 15:41:42 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	kvm@...r.kernel.org, gnatapov@...hat.com
Subject: [PATCH 2/3] KVM: vmx: count exits to userspace during invalid guest emulation

These will happen due to MMIO.

Suggested-by: Gleb Natapov @gleb@...hat.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/kvm/vmx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 57b4e12..1f1da43 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5485,6 +5485,7 @@ static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
 		err = emulate_instruction(vcpu, EMULTYPE_NO_REEXECUTE);
 
 		if (err == EMULATE_USER_EXIT) {
+			++vcpu->stat.mmio_exits;
 			ret = 0;
 			goto out;
 		}
-- 
1.8.3.1


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/