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author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2021-09-28 13:54:01 +0200 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-10-08 20:02:46 +0800 |
commit | 5c734c638aa1a3dbfd96248703e070706343284b (patch) | |
tree | b61bfab72d5e728f4073ad094c2c73db9131c2a0 /crypto/tcrypt.c | |
parent | 249067af018369c279ae20e88415b94740a29c46 (diff) | |
download | linux-crypto-5c734c638aa1a3dbfd96248703e070706343284b.tar.gz linux-crypto-5c734c638aa1a3dbfd96248703e070706343284b.zip |
crypto: testmgr - Only disable migration in crypto_disable_simd_for_test()
crypto_disable_simd_for_test() disables preemption in order to receive a
stable per-CPU variable which it needs to modify in order to alter
crypto_simd_usable() results.
This can also be achived by migrate_disable() which forbidds CPU
migrations but allows the task to be preempted. The latter is important
for PREEMPT_RT since operation like skcipher_walk_first() may allocate
memory which must not happen with disabled preemption on PREEMPT_RT.
Use migrate_disable() in crypto_disable_simd_for_test() to achieve a
stable per-CPU pointer.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/tcrypt.c')
0 files changed, 0 insertions, 0 deletions