From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dor Laor Subject: Re: -cpu core2duo still has no SSE4 support? Date: Thu, 15 Sep 2011 12:19:14 +0300 Message-ID: <4E71C312.1020908@redhat.com> References: <1316077558.3743.11.camel@lappy> Reply-To: dlaor@redhat.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Sasha Levin , kvm@vger.kernel.org, Eduardo Habkost To: Jun Koi Return-path: Received: from mx1.redhat.com ([209.132.183.28]:14217 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755853Ab1IOJTS (ORCPT ); Thu, 15 Sep 2011 05:19:18 -0400 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On 09/15/2011 12:14 PM, Jun Koi wrote: > On Thu, Sep 15, 2011 at 5:05 PM, Sasha Levin wrote: >> On Thu, 2011-09-15 at 17:04 +0800, Jun Koi wrote: >>> hi, >>> >>> i run kvm with "-cpu core2duo" option, but /proc/cpuinfo only shows >>> SSE and SSE2. >>> my host is Core i7, so i suppose that i should have SSE4 with this >>> option, but it seems not? >>> >>> is there any way to get SSE4? >> >> How about just running it with '-cpu host'? > > hah, that works, thanks! > > but then there are 2 problems: > > - "-cpu host" should be exposed in the doc. "kvm -cpu ?" reports no > such option, so i missed it. > - "-cpu core2duo" should enable SSE4, but it doesnt. a bug? If this model should have contain it, yes. According to sysconfigs/target/target-x86_64.conf it shouldn't be in core2duo but does appear in newer ones. > > thanks, > Jun > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html