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amd64 copyout: remove irrelevant comment.

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Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
This commit is contained in:
Konstantin Belousov 2019-11-17 14:41:47 +00:00
parent 7ce4a1458e
commit b2e1b88984
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=354788
1 changed files with 1 additions and 7 deletions
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8
sys/amd64/amd64/support.S
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@ -671,13 +671,7 @@ END(fillw)
movq $copy_fault,PCB_ONFAULT(%r11)
/*
* Check explicitly for non-user addresses. If 486 write protection
* is being used, this check is essential because we are in kernel
* mode so the h/w does not provide any protection against writing
* kernel addresses.
*/
/*
* Check explicitly for non-user addresses.
* First, prevent address wrapping.
*/
movq %rsi,%rax