From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Nd6wM-0003e1-W0 for qemu-devel@nongnu.org; Thu, 04 Feb 2010 14:00:35 -0500 Received: from [199.232.76.173] (port=38185 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Nd6wL-0003df-KE for qemu-devel@nongnu.org; Thu, 04 Feb 2010 14:00:33 -0500 Received: from Debian-exim by monty-python.gnu.org with spam-scanned (Exim 4.60) (envelope-from ) id 1Nd6wI-0000Oc-8R for qemu-devel@nongnu.org; Thu, 04 Feb 2010 14:00:33 -0500 Received: from thoth.sbs.de ([192.35.17.2]:22435) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1Nd6wH-0000OE-Mk for qemu-devel@nongnu.org; Thu, 04 Feb 2010 14:00:30 -0500 Message-ID: <4B6B194A.90009@siemens.com> Date: Thu, 04 Feb 2010 20:00:26 +0100 From: Jan Kiszka MIME-Version: 1.0 References: <372238c800e0d57815f472502fdf78e53463bbb6.1265232579.git.jan.kiszka@siemens.com> <20100203234929.GA11012@amt.cnet> <4B6A15EE.4050501@web.de> <20100204130038.GA15671@amt.cnet> <4B6AE1E6.9040805@siemens.com> <4B6AEAB8.3030509@siemens.com> <20100204180555.GA3861@amt.cnet> <4B6B179A.3080704@siemens.com> In-Reply-To: <4B6B179A.3080704@siemens.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Re: [PATCH 4/4] KVM: Rework of guest debug state writing List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Marcelo Tosatti Cc: Anthony Liguori , "qemu-devel@nongnu.org" , "kvm@vger.kernel.org" , Avi Kivity Jan Kiszka wrote: > Marcelo Tosatti wrote: >> >> Unrelated to this problem, won't put_vcpu_events, which is executed >> after KVM_SET_GUEST_DEBUG, overwrite any queued debug exceptions? > > Good point, SET_GUEST_DEBUG should be last in the writeback for that reason. Actually, we no longer need the exception injection via SET_GUEST_DEBUG now that we have full access via vcpu_events. So this needs a cleanup, and I'm afraid quite a few cases are broken ATM with vcpu_events writeback overwriting the reinjected exceptions. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux