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| author | Michael Ellerman <mpe@ellerman.id.au> | 2017-05-19 04:29:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 20:52:13 +0300 |
| commit | e0b98134e5f0d292c8cb71f117a77c9a2f75b46a (patch) | |
| tree | d21865331e8ee2aea9792d412c0ba4ec5c942961 /crypto/anubis.c | |
| parent | f08a63e04c34023dd67d05774ab5faadf34400ab (diff) | |
| download | linux-e0b98134e5f0d292c8cb71f117a77c9a2f75b46a.tar.xz | |
selftests/powerpc: Fix TM resched DSCR test with some compilers
[ Upstream commit fe06fe860250a4f01d0eaf70a2563b1997174a74 ]
The tm-resched-dscr test has started failing sometimes, depending on
what compiler it's built with, eg:
test: tm_resched_dscr
Check DSCR TM context switch: tm-resched-dscr: tm-resched-dscr.c:76: test_body: Assertion `rv' failed.
!! child died by signal 6
When it fails we see that the compiler doesn't initialise rv to 1 before
entering the inline asm block. Although that's counter intuitive, it
is allowed because we tell the compiler that the inline asm will write
to rv (using "=r"), meaning the original value is irrelevant.
Marking it as a read/write parameter would presumably work, but it seems
simpler to fix it by setting the initial value of rv in the inline asm.
Fixes: 96d016108640 ("powerpc: Correct DSCR during TM context switch")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto/anubis.c')
0 files changed, 0 insertions, 0 deletions