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powerpc/64: Use barrier_nospec in syscall entry
authorMichael Ellerman <mpe@ellerman.id.au>
Fri, 29 Mar 2019 11:25:53 +0000 (22:25 +1100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Apr 2019 04:25:12 +0000 (06:25 +0200)
commitd4d3a4b43809a1a8bf6031dd22b7eb9b05e09c09
tree44045f05f73cbeffad78b7143503b1a698594721tree | snapshot
parent3692ca6ff3ee470951c91c788447ed38e6f8dd7ccommit | diff
powerpc/64: Use barrier_nospec in syscall entry

commit 51973a815c6b46d7b23b68d6af371ad1c9d503ca upstream.

Our syscall entry is done in assembly so patch in an explicit
barrier_nospec.

Based on a patch by Michal Suchanek.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/powerpc/kernel/entry_64.S diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git