From: "André Hentschel" <nerv@dawncrow.de>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: linux-arch@vger.kernel.org, will.deacon@arm.com,
rmk+kernel@arm.linux.org.uk
Subject: Re: arm: Request to preserve TPIDRURW per thread
Date: Tue, 22 Jan 2013 01:16:01 +0100 [thread overview]
Message-ID: <50FDDA41.7090201@dawncrow.de> (raw)
In-Reply-To: <20130122001143.GA4107@kroah.com>
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
next prev parent reply other threads:[~2013-01-22 0:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-22 0:04 arm: Request to preserve TPIDRURW per thread André Hentschel
2013-01-22 0:11 ` Greg KH
2013-01-22 0:16 ` André Hentschel [this message]
2013-01-22 9:24 ` Will Deacon
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