powerpc/64: Use barrier_nospec in syscall entry
authorMichael Ellerman <mpe@ellerman.id.au>
Tue, 24 Apr 2018 04:15:59 +0000 (14:15 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Sun, 3 Jun 2018 10:43:45 +0000 (20:43 +1000)
commit51973a815c6b46d7b23b68d6af371ad1c9d503ca
treedd5bd1a449e91b922db6afb4c097eca2cea01583
parentddf35cf3764b5a182b178105f57515b42e2634f8
powerpc/64: Use barrier_nospec in syscall entry

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>
arch/powerpc/kernel/entry_64.S