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(parent: f5eaac2) | patch
powerpc/64s: Enable barrier_nospec based on firmware settings
authorMichal Suchanek <msuchanek@suse.de>
Tue, 24 Apr 2018 04:15:57 +0000 (14:15 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Sun, 3 Jun 2018 10:43:45 +0000 (20:43 +1000)
commitcda191505a9e9b294a3d80fd3f7743fec158d7be
tree7437d3e50f9ce967c0da85868121dee80f5afa3ftree | snapshot
parentf5eaac2f75de0e606292355c3d053eb51784904bcommit | diff
powerpc/64s: Enable barrier_nospec based on firmware settings

Check what firmware told us and enable/disable the barrier_nospec as
appropriate.

We err on the side of enabling the barrier, as it's no-op on older
systems, see the comment for more detail.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/include/asm/setup.h diff | blob | history
arch/powerpc/kernel/security.c diff | blob | history
arch/powerpc/platforms/powernv/setup.c diff | blob | history
arch/powerpc/platforms/pseries/setup.c diff | blob | history
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