d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

amd64: hide non-erms jump label under non-erms copyin/copyout

Browse Source 
This change is a no-op in terms of semantics, but has a side effect
of removing a perfectly useless nop sled for CPUs with ERMS.

Approved by:	re (gjb)
Sponsored by:   The FreeBSD Foundation
This commit is contained in:
Mateusz Guzik 2018-10-04 20:01:48 +00:00
parent 627e5af85a
commit 9657b80ce7
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/amd64/amd64/support.S
View File

@ -457,9 +457,9 @@ END(fillw)
movq %rax,PCB_ONFAULT(%r9)
POP_FRAME_POINTER
ret
.endif
ALIGN_TEXT
1:
.endif
rep
movsb
@ -525,9 +525,9 @@ END(copyout_smap_erms)
movq %rax,PCB_ONFAULT(%r9)
POP_FRAME_POINTER
ret
.endif
ALIGN_TEXT
1:
.endif
rep
movsb