From patchwork Mon Sep 14 07:51:41 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avi Kivity X-Patchwork-Id: 47236 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n8E7pmfn014998 for ; Mon, 14 Sep 2009 07:51:48 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751192AbZINHvn (ORCPT ); Mon, 14 Sep 2009 03:51:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750749AbZINHvm (ORCPT ); Mon, 14 Sep 2009 03:51:42 -0400 Received: from mx1.redhat.com ([209.132.183.28]:1823 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750696AbZINHvm (ORCPT ); Mon, 14 Sep 2009 03:51:42 -0400 Received: from int-mx05.intmail.prod.int.phx2.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.18]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id n8E7pjxv017650 for ; Mon, 14 Sep 2009 03:51:46 -0400 Received: from cleopatra.tlv.redhat.com (cleopatra.tlv.redhat.com [10.35.255.11]) by int-mx05.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id n8E7ph5X015004; Mon, 14 Sep 2009 03:51:44 -0400 Received: from localhost.localdomain (cleopatra.tlv.redhat.com [10.35.255.11]) by cleopatra.tlv.redhat.com (Postfix) with ESMTP id 4FD3A25004A; Mon, 14 Sep 2009 10:51:42 +0300 (IDT) From: Avi Kivity To: Marcelo Tosatti Cc: kvm@vger.kernel.org Subject: [PATCH] test: add cr8 latency tests Date: Mon, 14 Sep 2009 10:51:41 +0300 Message-Id: <1252914701-2568-1-git-send-email-avi@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.18 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org In light of the recent cr8/ept problem. Signed-off-by: Avi Kivity --- kvm/user/test/x86/vmexit.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/kvm/user/test/x86/vmexit.c b/kvm/user/test/x86/vmexit.c index bd1895f..cce26d9 100644 --- a/kvm/user/test/x86/vmexit.c +++ b/kvm/user/test/x86/vmexit.c @@ -37,12 +37,28 @@ static void vmcall(void) asm volatile ("vmcall" : "+a"(a), "=b"(b), "=c"(c), "=d"(d)); } +static void mov_from_cr8(void) +{ + unsigned long cr8; + + asm volatile ("mov %%cr8, %0" : "=r"(cr8)); +} + +static void mov_to_cr8(void) +{ + unsigned long cr8 = 0; + + asm volatile ("mov %0, %%cr8" : : "r"(cr8)); +} + static struct test { void (*func)(void); const char *name; } tests[] = { { cpuid, "cpuid", }, { vmcall, "vmcall", }, + { mov_from_cr8, "mov_from_cr8" }, + { mov_to_cr8, "mov_to_cr8" }, }; static void do_test(struct test *test)