From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JPK1a-0005Mx-Qn for qemu-devel@nongnu.org; Wed, 13 Feb 2008 10:59:54 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JPK1W-0005L1-4v for qemu-devel@nongnu.org; Wed, 13 Feb 2008 10:59:54 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JPK1W-0005Kw-0K for qemu-devel@nongnu.org; Wed, 13 Feb 2008 10:59:50 -0500 Received: from wr-out-0506.google.com ([64.233.184.231]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1JPK1V-0002wH-KP for qemu-devel@nongnu.org; Wed, 13 Feb 2008 10:59:49 -0500 Received: by wr-out-0506.google.com with SMTP id 50so109496wra.18 for ; Wed, 13 Feb 2008 07:59:44 -0800 (PST) Message-ID: <19f34abd0802130759x7b789b63od5ed791d63d49672@mail.gmail.com> Date: Wed, 13 Feb 2008 16:59:42 +0100 From: "Vegard Nossum" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline Subject: [Qemu-devel] FXSAVE doesn't #GP on alignment error Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Pekka Enberg Hello, I am not sure if this should be treated as an error or not (it definitely isn't critical), but I'll post it as an extra information if it is useful or you think it should be fixed. According to Intel manuals, the FXSAVE instruction requires the argument to be 16-byte aligned. On a real machine, violating this constraint results in a #GP. From experience, qemu will not enforce this alignment constraint. Kind regards, Vegard Nossum