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SubjectRE: A bug about system call on ARM
Hi  Will,

Could I know what's your git branch is mainly used for ?

https://git.kernel.org/cgit/linux/kernel/git/will/linux.git


I mean if the branch is used for ARM arch maintenance ?
If yes, I think I can send future bugs about ARM to you directly,
And do not need ping-pang in the mail list .

Thanks for your help .

-----Original Message-----
From: Wang, Yalin
Sent: Monday, June 03, 2013 5:58 PM
To: 'Will Deacon'
Cc: 'richard -rw- weinberger'; 'linux-arch@vger.kernel.org'; 'linux-kernel@vger.kernel.org'; 'linux-arm-kernel@lists.infradead.org'
Subject: RE: A bug about system call on ARM

Hi Will

Oh I see,
Thanks for your reply

Yes , we are testing for it ,
But need some time to wait for the result , Because The stability test need some time to reproduce this issue , And this issue doesn't reproduce 100% .


-----Original Message-----
From: Will Deacon [mailto:will.deacon@arm.com]
Sent: Monday, June 03, 2013 5:54 PM
To: Wang, Yalin
Cc: 'richard -rw- weinberger'; 'linux-arch@vger.kernel.org'; 'linux-kernel@vger.kernel.org'; 'linux-arm-kernel@lists.infradead.org'
Subject: Re: A bug about system call on ARM

On Mon, Jun 03, 2013 at 06:25:26AM +0100, Wang, Yalin wrote:
> Hi Will,
>
> I have a question about this patch .
>
> If the user space is thumb mode,
> The PC should be rewind by 2 bytes,
> So the fix_up code should be
>
> Sub lr, lr, #2 .
>
>
> Am I right ?

No, because we don't have OABI-compat support for Thumb applications and force everything down the EABI path instead.

Did you manage to test the patch?

Will


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