[RESEND][PATCH v2] powerpc: Export thread_struct.used_vr/used_vsr to user space

Simon Guo wei.guo.simon at gmail.com
Wed Jun 22 12:40:39 AEST 2016


On Tue, Jun 21, 2016 at 02:30:06PM +0800, Simon Guo wrote:
> Hi Michael,
> On Wed, Apr 06, 2016 at 03:00:12PM +0800, Simon Guo wrote:
> > These 2 fields track whether user process has used Altivec/VSX
> > registers or not. They are used by kernel to setup signal frame
> > on user stack correctly regarding vector part.
> > 
> > CRIU(Checkpoint and Restore In User space) builds signal frame
> > for restored process. It will need this export information to
> > setup signal frame correctly. And CRIU will need to restore these
> > 2 fields for the restored process.
> > 
> > Signed-off-by: Simon Guo <wei.guo.simon at gmail.com>
> > Reviewed-by: Laurent Dufour <ldufour at linux.vnet.ibm.com>
> > ---
> 
> Just a kind reminder per our previous discussion.
> If possible, please help pull this in during 4.8 merge window. Some CRIU work items are pending for it.
> 
> Have a nice day.
> 
> Thanks,
> - Simon

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Thanks,
- Simon (IBM LTC)


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