unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
1
Fork 0
Code Pull requests 5 Wiki Activity

sparc64: Use fsrc2 instead of fsrc1 in sparc64 hash crypto drivers.

Browse source 
On SPARC-T4 fsrc2 has 1 cycle of latency, whereas fsrc1 has 11 cycles.

True story.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-08-28 20:55:19 -07:00
parent 81658ad0d9
commit 45dfe237a8
4 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/sparc/crypto/md5_asm.S
View file

@ -62,7 +62,7 @@ ENTRY(md5_sparc64_transform)
.word 0x81b02800
subcc %o2, 1, %o2
fsrc1 %f26, %f10
fsrc2 %f26, %f10
bne,pt %xcc, 1b
add %o1, 0x40, %o1

2
arch/sparc/crypto/sha1_asm.S
View file

@ -64,7 +64,7 @@ ENTRY(sha1_sparc64_transform)
.word 0x81b02820
subcc %o2, 1, %o2
fsrc1 %f26, %f10
fsrc2 %f26, %f10
bne,pt %xcc, 1b
add %o1, 0x40, %o1

2
arch/sparc/crypto/sha256_asm.S
View file

@ -70,7 +70,7 @@ ENTRY(sha256_sparc64_transform)
.word 0x81b02840
subcc %o2, 1, %o2
fsrc1 %f26, %f10
fsrc2 %f26, %f10
bne,pt %xcc, 1b
add %o1, 0x40, %o1

2
arch/sparc/crypto/sha512_asm.S
View file

@ -94,7 +94,7 @@ ENTRY(sha512_sparc64_transform)
.word 0x81b02860
subcc %o2, 1, %o2
fsrc1 %f50, %f18
fsrc2 %f50, %f18
bne,pt %xcc, 1b
add %o1, 0x80, %o1