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s390: add optimized array_index_mask_nospec
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 27 Apr 2018 05:36:49 +0000 (07:36 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 29 Apr 2018 05:50:02 +0000 (07:50 +0200)
commitcf6bc919fa35e91dfc2055ad862ee8f68eafb1d9
treeffae539dd0ff888090a27604811e7ce4b4aa49c7tree | snapshot
parente24d6c4b5e19d6c168d8ca34e1859c83b30189d5commit | diff
s390: add optimized array_index_mask_nospec

[ Upstream commit e2dd833389cc4069a96b57bdd24227b5f52288f5 ]

Add an optimized version of the array_index_mask_nospec function for
s390 based on a compare and a subtract with borrow.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/s390/include/asm/barrier.h diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git