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| author | Andrea Arcangeli <aarcange@redhat.com> | 2015-09-23 00:59:00 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-23 01:09:53 +0300 |
| commit | 1f5fee2cf232f9fac05b65f21107d2cf3c32092c (patch) | |
| tree | 128e8442c6a20e983b9c7939b2e91c55e03f6df5 /scripts | |
| parent | 56ed8f169e225dce1f9e40f6eee2e2dabe7d06fc (diff) | |
| download | linux-1f5fee2cf232f9fac05b65f21107d2cf3c32092c.tar.xz | |
userfaultfd: selftest: avoid my_bcmp false positives with powerpc
Keep a non-zero placeholder after the count, for the my_bcmp comparison
of the page against the zeropage. The lockless increment between 255 to
256 against a lockless my_bcmp could otherwise return false positives on
ppc32le.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions