linux-kernel - Re: [PATCH] [4/12] x86_64: Disable CLFLUSH support again

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Message-ID: <20070809131121.GL3311@rhun.haifa.ibm.com>
Date:	Thu, 9 Aug 2007 16:11:21 +0300
From:	Muli Ben-Yehuda <muli@...ibm.com>
To:	Andi Kleen <ak@...e.de>
Cc:	patches@...-64.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [4/12] x86_64: Disable CLFLUSH support again

On Thu, Aug 09, 2007 at 02:41:31PM +0200, Andi Kleen wrote:
> 
> It turns out CLFLUSH support is still not complete; we
> flush the wrong pages.  Again disable it for the release.
> Noticed by Jan Beulich.
> 
> Signed-off-by: Andi Kleen <ak@...e.de>

Aside from the bug Jan pointed out with the patch, we're also using
cflflush in other places (arch/i386/kernel/alternative.c and
arch/x86_64/kernel/tce.c). Is the issue with clflush support specific
to pageattr.c or should it be disabled every else too? what
specifically is the issue?

Cheers,
Muli

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