Re: [Qemu-devel] [PATCH] Revived GUEST_BASE support for usermode emulation targets [v4]

[Martin Mohring]

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