From patchwork Wed Jun  5 03:02:26 2013
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Date: Wed, 5 Jun 2013 13:02:26 +1000
From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org
Subject: [PATCH] powerpc: Align thread->fpr to 16 bytes
Message-ID: <20130605130226.59f29836@kryten>
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On newer CPUs we use VSX loads and stores to the thread->fpr array.
For best performance we need to ensure 16 byte alignment.

Signed-off-by: Anton Blanchard <anton@samba.org>

Index: b/arch/powerpc/include/asm/processor.h
===================================================================
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -200,7 +200,7 @@ struct thread_struct {
 #endif
 #endif
 	/* FP and VSX 0-31 register set */
-	double		fpr[32][TS_FPRWIDTH];
+	double		fpr[32][TS_FPRWIDTH] __attribute__((aligned(16)));
 	struct {
 
 		unsigned int pad;