Messages in this thread | | | Date | Mon, 18 Oct 2010 21:45:08 +0800 | From | Dave Young <> | Subject | Re: [BUG] kvm: guest can not startup due to triple fault |
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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:
[ 3228.468325] efer_reserved_bits = 0xfffffffffffffafe [ 3228.468328] efer = 0x100 [ 3228.468330] old_efer = 0x0
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