linux-kernel - Re: [BUG] kvm: guest can not startup due to triple fault

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Message-ID: <4CBC547A.8080700@redhat.com>
Date:	Mon, 18 Oct 2010 16:06:50 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Dave Young <hidave.darkstar@...il.com>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.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 10/18/2010 03:58 PM, Dave Young wrote:
> >
> >  Please patch hardware_setup() to show the value of
> >  boot_cpu_has(X86_FEATURE_NX).
>
> It's 0

Well, that's ridiculous.  Looking back at your /proc/cpuinfo:

> processor	: 0
> flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida dts tpr_shadow vnmi flexpriority
>
> processor	: 1
> flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida dts tpr_shadow vnmi flexpriority

processor 0 doesn't have nx.

Ingo, Peter, any ideas?  Where did the missing feature go?

-- 
error compiling committee.c: too many arguments to function

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