From: Anton Blanchard <anton@samba.org>
Date: Wed, 5 Jun 2013 03:02:26 +0000 (+1000)
Subject: powerpc: Align thread->fpr to 16 bytes
X-Git-Tag: firefly_0821_release~176^2~5781^2~118
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=475e68cfdde39e6d95055999b0cb42fdb2bea0ca;p=firefly-linux-kernel-4.4.55.git

powerpc: Align thread->fpr to 16 bytes

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>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 2b5a39c67df4..9fe1129efa02 100644
--- 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;