[Bug 248933] sys.kern.kern_copyin.kern_copyin fails after somewhere in (r364509, r364542]

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Fri Sep 4 12:52:39 UTC 2020


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248933

--- Comment #3 from commit-hook at FreeBSD.org ---
A commit references this bug:

Author: kib
Date: Fri Sep  4 12:52:17 UTC 2020
New revision: 365327
URL: https://svnweb.freebsd.org/changeset/base/365327

Log:
  Fix kern_copyin test.

  Main part is that kern_copyin on amd64 after LA57 should query the top
  of UVA for correct operations. In fact it should started doing that
  after the workaround for AMD bug with IRET in the last user page was
  fixed by reducing UVA by a page.

  Also since we started calculating top of UVA, fix MIPS according to
  the comment.

  Reported by:  lwhsu
  PR:   248933
  Reviewed by:  alc, markj
  Sponsored by: The FreeBSD Foundation
  Differential revision:        https://reviews.freebsd.org/D26312

Changes:
  head/tests/sys/kern/kern_copyin.c

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