svn commit: r354887 - stable/12/sys/amd64/amd64

Konstantin Belousov kib at FreeBSD.org
Wed Nov 20 10:25:50 UTC 2019


Author: kib
Date: Wed Nov 20 10:25:50 2019
New Revision: 354887
URL: https://svnweb.freebsd.org/changeset/base/354887

Log:
  MFC r354788:
  amd64 copyout: remove irrelevant comment.

Modified:
  stable/12/sys/amd64/amd64/support.S
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/amd64/amd64/support.S
==============================================================================
--- stable/12/sys/amd64/amd64/support.S	Wed Nov 20 08:56:01 2019	(r354886)
+++ stable/12/sys/amd64/amd64/support.S	Wed Nov 20 10:25:50 2019	(r354887)
@@ -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


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