On Tue, Sep 28, 2021 at 01:54:01PM +0200, Sebastian Andrzej Siewior wrote: > 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@xxxxxxxxxxxxx> > --- > crypto/testmgr.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Patch applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
