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Date: Fri, 15 May 2009 10:41:09 +0200
From: Martin Mohring <martin.mohring@opensuse.org>
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Subject: Re: [Qemu-devel] [PATCH] Revived GUEST_BASE support for usermode
	emulation targets [v4]
References: <1241028203-19687-1-git-send-email-riku.voipio@iki.fi>	<Pine.LNX.4.64.0905052147290.2167@linmac.oyster.ru>	<20090505204636.GB32298@kos.to>
	<200905150325.31918.paul@codesourcery.com>
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To: Paul Brook <paul@codesourcery.com>
Cc: martin.mohring@opensuse.org, mika.westerberg@iki.fi, Riku Voipio <riku.voipio@iki.fi>, qemu-devel@nongnu.org

Paul Brook wrote:
> On Tuesday 05 May 2009, Riku Voipio wrote:
>   
>> On Tue, May 05, 2009 at 10:02:41PM +0400, malc wrote:
>>     
>>> Things should work the way they are in your latest patch on x86 and
>>> should be done the way it's done in the original submission (mov + add)
>>> for x86_64.
>>>       
>> Ok.. here we go. not on a amd64 machine right now so I will test
>> that part tomorrow.
>>     
>
> I'm pretty sure it's still broken for large offsets.
>
> Paul
>   
Is big offsets the intention of this patch? As far as I understood its
for small offsets (typical 64k - on debian, ubuntu, suse, fedora and all
the others - i checked it because it tested this), so address 0 will not
be used in typical linux configs today to grab null pointer exceptions.

As result of some commits, the patch currently does not apply anymore.

Martin