From mboxrd@z Thu Jan 1 00:00:00 1970 From: yuhong Subject: Re: [PATCH] Add xsave/xrstor support to Xen Date: Fri, 3 Apr 2009 17:22:59 -0700 (PDT) Message-ID: <22878390.post@talk.nabble.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Keir Fraser-3 wrote: > > I must say I am happy to wait until there are some actual extended state > vectors to be saved. It's not clear that the XSAVE format is the right way > to extend the HVM save/restore format. The right direction may depend on > what types of new state are introduced, whether these are achitectural or > vendor-specific, etc. It doesn't sound like there's a downside to sitting > on > the fence and doing nothing for now. > Fortunately, the additional state that will be saved by future processors is already documented in the Intel AVX programming reference. Basically, AVX is extending the XMM registers to 256-bit. These extended registers are called the YMM registers. -- View this message in context: http://www.nabble.com/-PATCH--Add-xsave-xrstor-support-to-Xen-tp17511107p22878390.html Sent from the Xen - Dev mailing list archive at Nabble.com.