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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-02-06 18:06:03 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-02-07 11:57:10 +0100 |
| commit | 142c52d7bce45d335f48d53fdbf428bb15cf3924 (patch) | |
| tree | a098a153ac40557cd56ebdba89bfa08180c0fdbc /arch/s390 | |
| parent | f8b11e089aeb63303daa0c05e4575df7075b1122 (diff) | |
| download | linux-142c52d7bce45d335f48d53fdbf428bb15cf3924.tar.bz2 | |
s390: add alignment hints to vector load and store
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>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/vx-insn.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/s390/include/asm/vx-insn.h b/arch/s390/include/asm/vx-insn.h index 266a72320e05..0c05a673811c 100644 --- a/arch/s390/include/asm/vx-insn.h +++ b/arch/s390/include/asm/vx-insn.h @@ -363,23 +363,23 @@ .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 */ |