From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [BUG] kvm: guest can not startup due to triple fault Date: Mon, 18 Oct 2010 15:46:17 +0200 Message-ID: <4CBC4FA9.90406@redhat.com> References: <20101017085416.GA1758@darkstar> <4CBAC342.1010609@redhat.com> <4CBAE8E2.1060704@redhat.com> <4CBBF3C8.9070104@web.de> <4CBC1047.6010501@redhat.com> <20101018125803.GA2497@darkstar> <4CBC4B06.3030300@redhat.com> <20101018134508.GA11885@darkstar> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Jan Kiszka , kvm@vger.kernel.org, linux-kernel@vger.kernel.org To: Dave Young Return-path: In-Reply-To: <20101018134508.GA11885@darkstar> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 10/18/2010 03:45 PM, Dave Young wrote: > On Mon, Oct 18, 2010 at 03:26:30PM +0200, Avi Kivity wrote: > > On 10/18/2010 02:58 PM, Dave Young wrote: > > >> > > >> It's secondary_startup_64 enabling efer.sce and efer.nx. > > >> > > >> Dave, please post your /proc/cpuinfo. Is your host running with NX > > >> disabled? > > > > > >I see nx bit in /proc/cpuinfo, Actually I don't know how to disable it. > > > > Strange. > > > > Please patch arch/x86/kvm/x86.c to printk efer_reserved_bits (a > > global), efer (an argument) and old_efer (a local), and post the > > results. > > I add printk before kvm_mmu_reset_context(vcpu), correct? get following value: > Add it at the beginning please, otherwise we'll miss the important one due to an early return. -- error compiling committee.c: too many arguments to function