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Date: Fri, 8 Jul 2016 13:39:01 +0800
From: Simon Guo <wei.guo.simon@gmail.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Laurent Dufour <ldufour@linux.vnet.ibm.com>,
 Michael Ellerman <mpe@ellerman.id.au>, linux-kernel@vger.kernel.org,
 linuxppc-dev@lists.ozlabs.org, Paul Mackerras <paulus@samba.org>,
 Kees Cook <keescook@chromium.org>, Rashmica Gupta <rashmicy@gmail.com>
Subject: Re: [v4] powerpc: Export thread_struct.used_vr/used_vsr to user space
Message-ID: <20160708053901.GA6489@simonLocalRHEL7.x64>
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On Thu, Jul 07, 2016 at 11:21:18PM +1000, Benjamin Herrenschmidt wrote:
> I think the right fix is that if a restore_sigcontext() has the MSR bits set,
> it should set the corresponding used_* flag.
> 
> Or is there a reason why that won't work ?

That sounds reaonable to me.
I will prepare a patch based on that.

Michael, Ben, Laurent,
Thanks the discussion and proposal.

- Simon