Re: arm: Request to preserve TPIDRURW per thread

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Am 22.01.2013 01:11, schrieb Greg KH:
> On Tue, Jan 22, 2013 at 01:04:56AM +0100, André Hentschel wrote:
>> Hi,
>> that comes a bit late, but [1] asked for objections.
>> As you can see in [2] there are more and more applications coming to WinRT, Wine could support them,
>> but mostly they expect to have the thread environment block (TEB) in TPIDRURW.
>> This register must be preserved per thread and we have patches for that.
>>
>> Currently there exist two kernel behaviours:
>>
>> 1. the kernel does not touch TPIDRURW at all ("covert channel")
>> 2. the kernel clears TPIDRURW on thread switch
>>
>> Attached to [3] you'll find kernel patches you can freely use.
>> Permission and more info you'll find in [4].
>> Any hints or suggestions?
>>
>> [1] http://www.kernelhub.org/?p=2&msg=57979
>> [2] http://forum.xda-developers.com/showthread.php?t=2092348
>> [3] http://bugs.winehq.org/show_bug.cgi?id=31322
>> [4] http://bugs.winehq.org/show_bug.cgi?id=31308
> 
> Please submit the patches to fix this in the way described in
> Documentation/SubmittingPatches.  Once they are in Linus's tree, I'll be
> glad to take them in the stable tree if they meet the guidelines that
> are described in Documentation/stable_kernel_rules.txt.
> 
> Does that help?
> 
> thanks,
> 
> greg k-h
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> 

Sure, thx.
It only will take a while, because i'm out for some days. I'll report back.

-- 

Best Regards, André Hentschel
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