From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:54052) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QWoLs-0001R8-Qb for qemu-devel@nongnu.org; Wed, 15 Jun 2011 07:33:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QWoLr-00054f-7T for qemu-devel@nongnu.org; Wed, 15 Jun 2011 07:33:40 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57263) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QWoLq-00054T-Rb for qemu-devel@nongnu.org; Wed, 15 Jun 2011 07:33:39 -0400 Message-ID: <4DF8988C.7010401@redhat.com> Date: Wed, 15 Jun 2011 14:33:32 +0300 From: Avi Kivity MIME-Version: 1.0 References: <4DF33413.9070605@web.de> <4DF5CE2E.50008@redhat.com> <4DF6FB62.60705@web.de> <4DF87717.9090007@redhat.com> <4DF88773.3050401@web.de> <4DF896D8.2000506@redhat.com> <4DF8983B.5020009@siemens.com> In-Reply-To: <4DF8983B.5020009@siemens.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH][uq/master] kvm: x86: Save/restore FPU OP, IP and DP List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: Christophe Fergeau , Marcelo Tosatti , qemu-devel , kvm , Stefan Hajnoczi On 06/15/2011 02:32 PM, Jan Kiszka wrote: > > > > If it isn't zero, there's still a good chance fopcode will be zero > > (64-bit userspace, thread that hasn't used the fpu since the last > > context switch, last opcode happened to be zero). > > I do not yet find "if fopcode is invalid, it is zero, just as IP and DP" > in the spec. What clears them reliably? FNINIT -- error compiling committee.c: too many arguments to function