linux-kernel - Re: 2.6.{26.2,27-rc} oops on virtualbox

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Message-ID: <48B47AD2.5080609@zytor.com>
Date:	Tue, 26 Aug 2008 14:51:14 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
CC:	Gerhard Brauer <gerhard.brauer@....de>,
	"Luiz Fernando N. Capitulino" <lcapitulino@...driva.com.br>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.{26.2,27-rc} oops on virtualbox

Mathieu Desnoyers wrote:
> 
> x86 alternative text_poke add wbinvd
> 
> Add a cache flush instruction before reenabling interrupts in text_poke.
> 
> If this works, we could use clflush() (which is sadly buggy on some archs) which
> is faster since it only clear a cacheline instead of the entire cache.
> 

Well, in this case it's VirtualBox we're talking about, a virtual 
architecture.  It's hard to know what it will do under *any* circumstances.

	-hpa
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