Author: mjg
Date: Thu Oct  4 20:01:48 2018
New Revision: 339183
URL: https://svnweb.freebsd.org/changeset/base/339183

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

Modified:
  head/sys/amd64/amd64/support.S

Modified: head/sys/amd64/amd64/support.S
==============================================================================
--- head/sys/amd64/amd64/support.S      Thu Oct  4 19:54:47 2018        
(r339182)
+++ head/sys/amd64/amd64/support.S      Thu Oct  4 20:01:48 2018        
(r339183)
@@ -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
 
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