From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Wed, 6 Feb 2019 18:06:03 +0100
Subject: s390: add alignment hints to vector load and store
Git-commit: 142c52d7bce45d335f48d53fdbf428bb15cf3924
Patch-mainline: v5.1-rc1
References: jsc#SLE-6907 FATE#327564 LTC#175887
The z14 introduced alignment hints to increase the performance of
vector loads and stores. The kernel uses an implicit alignmenet
of 8 bytes for the vector registers, set the alignment hint to 3.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
arch/s390/include/asm/vx-insn.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/arch/s390/include/asm/vx-insn.h
+++ b/arch/s390/include/asm/vx-insn.h
@@ -362,23 +362,23 @@
.endm
/* VECTOR LOAD MULTIPLE */
-.macro VLM vfrom, vto, disp, base
+.macro VLM vfrom, vto, disp, base, hint=3
VX_NUM v1, \vfrom
VX_NUM v3, \vto
GR_NUM b2, \base /* Base register */
.word 0xE700 | ((v1&15) << 4) | (v3&15)
.word (b2 << 12) | (\disp)
- MRXBOPC 0, 0x36, v1, v3
+ MRXBOPC \hint, 0x36, v1, v3
.endm
/* VECTOR STORE MULTIPLE */
-.macro VSTM vfrom, vto, disp, base
+.macro VSTM vfrom, vto, disp, base, hint=3
VX_NUM v1, \vfrom
VX_NUM v3, \vto
GR_NUM b2, \base /* Base register */
.word 0xE700 | ((v1&15) << 4) | (v3&15)
.word (b2 << 12) | (\disp)
- MRXBOPC 0, 0x3E, v1, v3
+ MRXBOPC \hint, 0x3E, v1, v3
.endm
/* VECTOR PERMUTE */