linux-kernel - Re: [RESEND][PATCH v2] powerpc: Export thread_struct.used_vr/used

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Message-ID: <20160412025859.GB7322@simonLocalRHEL7.x64>
Date:	Tue, 12 Apr 2016 10:58:59 +0800
From:	Simon Guo <wei.guo.simon@...il.com>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Kees Cook <keescook@...omium.org>,
	Rashmica Gupta <rashmicy@...il.com>,
	Simon Guo <simonguo@...ux.vnet.ibm.com>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Laurent Dufour <ldufour@...ux.vnet.ibm.com>
Subject: Re: [RESEND][PATCH v2] powerpc: Export
 thread_struct.used_vr/used_vsr to user space

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@...il.com>
> Reviewed-by: Laurent Dufour <ldufour@...ux.vnet.ibm.com>
> ---

Is there any chance that this patch can be merged upstream soon? 
The corresponding work of CRIU has to follow after that.

Thanks,
Simon