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Date: Mon, 18 Oct 2010 21:51:08 +0800 From: Dave Young <hidave.darkstar@...il.com> To: Avi Kivity <avi@...hat.com> Cc: Jan Kiszka <jan.kiszka@....de>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [BUG] kvm: guest can not startup due to triple fault On Mon, Oct 18, 2010 at 03:46:17PM +0200, Avi Kivity wrote: > 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. here it is: [ 3679.616500] efer_reserved_bits = 0xfffffffffffffafe [ 3679.616504] efer = 0xd01 [ 3679.616506] old_efer = 0x500 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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