From: Avi Kivity 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> Cc: kvm@vger.kernel.org To: Marcelo Tosatti Return-path: 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 Sender: kvm-owner@vger.kernel.org List-ID: 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) -- 1.6.4.1