linux-kernel - Re: [kvm-devel] guest crash on 2.6.20-rc4

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Message-ID: <45A5EFFC.2080609@qumranet.com>
Date:	Thu, 11 Jan 2007 10:06:20 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	Roland Dreier <rdreier@...co.com>
CC:	kvm-devel <kvm-devel@...ts.sourceforge.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [kvm-devel] guest crash on 2.6.20-rc4

Roland Dreier wrote:
>  >  	if (is_writeble_pte(*shadow_ent))
>  > -		return 0;
>  > +		return 1;
>
> With this patch, it looks like my guest is surviving the load that
> triggered the oops before.  So I think this fixes the issue I saw as well.
> I assume you'll send this in for 2.6.20?
>   

The patch actually replaces one bug (guest pagefaults on writable dirty 
ptes, under certain conditions) with another, rarer one (spinning on a 
user-mode pagefault on writable dirty kernel ptes).  I'll do it right 
and re-test, then send for .20 along with a few friends.


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

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