[src/trunk]: src/sys/arch/amd64/amd64 Split comment, otherwise it is misleadi...

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/46317b1c546e
branches:  trunk
changeset: 826268:46317b1c546e
user:      maxv <maxv%NetBSD.org@localhost>
date:      Fri Aug 25 11:05:46 2017 +0000

description:
Split comment, otherwise it is misleading. kcopy operates on kernel
memory, and must *not* be used with userland pages.

diffstat:

 sys/arch/amd64/amd64/copy.S |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (30 lines):

diff -r 6a2e1011dc5b -r 46317b1c546e sys/arch/amd64/amd64/copy.S
--- a/sys/arch/amd64/amd64/copy.S       Fri Aug 25 00:07:02 2017 +0000
+++ b/sys/arch/amd64/amd64/copy.S       Fri Aug 25 11:05:46 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: copy.S,v 1.22 2017/08/23 08:14:18 maxv Exp $   */
+/*     $NetBSD: copy.S,v 1.23 2017/08/25 11:05:46 maxv Exp $   */
 
 /*
  * Copyright (c) 2001 Wasabi Systems, Inc.
@@ -107,9 +107,6 @@
        ret
 
 /*
- * int kcopy(const void *from, void *to, size_t len);
- * Copy len bytes, abort on fault.
- *
  * Copy routines from and to userland, plus a few more. See the
  * section 9 manpages for info. Some cases can be optimized more.
  *
@@ -125,6 +122,10 @@
  * be ably to do cache-line size copies....
  */
 
+/*
+ * int kcopy(const void *from, void *to, size_t len);
+ * Copy len bytes from and to kernel memory, and abort on fault.
+ */
 ENTRY(kcopy)
        xchgq   %rdi,%rsi
        movq    %rdx,%rcx