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

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Date:	Tue, 19 Oct 2010 08:31:12 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Avi Kivity <avi@...hat.com>
CC:	Dave Young <hidave.darkstar@...il.com>,
	Ingo Molnar <mingo@...e.hu>, 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

That would probably be a good idea.  The kernel also sets and clears bits for various errata or other special issues.

"Avi Kivity" <avi@...hat.com> wrote:

>  On 10/19/2010 04:56 PM, H. Peter Anvin wrote:
>> Right... note in particular that the BIOS sets them up inconsistently.  The kernel is doing the rufht thing: since NX isn't available on all processors it is considered unavailable.
>
>I guess kvm should be modified to mask GET_SUPPORTED_CPUID results with 
>the boot_cpu features.  This will make kvm take advantage of the core 
>kernel doing the right thing.
>

-- 
Sent from my mobile phone.  Please pardon any lack of formatting.
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