From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=51108 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PXF9R-0001FY-Du for qemu-devel@nongnu.org; Mon, 27 Dec 2010 10:38:22 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PXF9P-00044G-Gk for qemu-devel@nongnu.org; Mon, 27 Dec 2010 10:38:21 -0500 Received: from mx1.redhat.com ([209.132.183.28]:61507) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PXF9P-000442-5B for qemu-devel@nongnu.org; Mon, 27 Dec 2010 10:38:19 -0500 Message-ID: <4D18B2E6.6080901@redhat.com> Date: Mon, 27 Dec 2010 17:38:14 +0200 From: Avi Kivity MIME-Version: 1.0 References: <4D18A98F.3070303@web.de> In-Reply-To: <4D18A98F.3070303@web.de> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Re: [PATCH] kvm: x86: Prevent sign extension of DR7 in guest debugging mode List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: Marcelo Tosatti , qemu-devel , kvm On 12/27/2010 04:58 PM, Jan Kiszka wrote: > From: Jan Kiszka > > This unbreaks guest debugging when the 4th hardware breakpoint used for > guest debugging is a watchpoint of 4 or 8 byte lenght. The 31st bit of > DR7 is set in that case and used to cause a sign extension to the high > word which was breaking the guest state (vm entry failure). Applied to uq/master, thanks. -- error compiling committee.c: too many arguments to function