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To: Anton Blanchard <anton@ozlabs.org>, benh@kernel.crashing.org,
 paulus@samba.org, aneesh.kumar@linux.vnet.ibm.com, acsawdey@linux.vnet.ibm.com
From: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [2/3] powerpc: Avoid load hit store in setup_sigcontext()
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Date: Wed, 15 Jun 2016 22:39:12 +1000 (AEST)
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On Sun, 2016-29-05 at 12:03:51 UTC, Anton Blanchard wrote:
> From: Anton Blanchard <anton@samba.org>
> 
> In setup_sigcontext(), we set current->thread.vrsave then use it
> straight after. Since current is hidden from the compiler via inline
> assembly, it cannot optimise this and we end up with a load hit store.
> 
> Fix this by using a temporary.
> 
> Signed-off-by: Anton Blanchard <anton@samba.org>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/d96f234f47aff593538f9e3d67

cheers