Author: mjg
Date: Thu Sep 20 20:32:08 2018
New Revision: 338841
URL: https://svnweb.freebsd.org/changeset/base/338841
Log:
amd64: macroify copyin/copyout and provide erms variants, follow up
Fix a fat-fingered typo with a "funny" side-effect: when doing copyin on a
cpu without ERMS and with size being a multiply of 8 a page fault would be
triggered resulting in EFAULT.
Pointy hat: mjg
Approved by: re (implicit)
Modified:
head/sys/amd64/amd64/support.S
Modified: head/sys/amd64/amd64/support.S
==============================================================================
--- head/sys/amd64/amd64/support.S Thu Sep 20 20:06:44 2018
(r338840)
+++ head/sys/amd64/amd64/support.S Thu Sep 20 20:32:08 2018
(r338841)
@@ -410,7 +410,7 @@ copyout_fault:
movsq
movb %al,%cl
andb $7,%cl /* copy remaining bytes */
- je 1
+ je 1f
.endif
rep
movsb
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