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| author | Michael Ellerman <mpe@ellerman.id.au> | 2019-04-11 21:46:08 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-17 08:36:41 +0200 |
| commit | 2f8703f281e114cfab0856024f54dc1ff3ef1f36 (patch) | |
| tree | 83f5f99bcf8836f5e09d2b575674eab23b4c3946 /arch/powerpc/lib | |
| parent | 1ec00d224fb3931bfbb6e57473aeadee5d7455d4 (diff) | |
powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC
commit 179ab1cbf883575c3a585bcfc0f2160f1d22a149 upstream.
Add a config symbol to encode which platforms support the
barrier_nospec speculation barrier. Currently this is just Book3S 64
but we will add Book3E in a future patch.
Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/powerpc/lib')
| -rw-r--r-- | arch/powerpc/lib/feature-fixups.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c index a1222c441df5..5df57f7bae0a 100644 --- a/arch/powerpc/lib/feature-fixups.c +++ b/arch/powerpc/lib/feature-fixups.c @@ -304,6 +304,9 @@ void do_barrier_nospec_fixups_range(bool enable, void *fixup_start, void *fixup_ printk(KERN_DEBUG "barrier-nospec: patched %d locations\n", i); } +#endif /* CONFIG_PPC_BOOK3S_64 */ + +#ifdef CONFIG_PPC_BARRIER_NOSPEC void do_barrier_nospec_fixups(bool enable) { void *start, *end; @@ -313,8 +316,7 @@ void do_barrier_nospec_fixups(bool enable) do_barrier_nospec_fixups_range(enable, start, end); } - -#endif /* CONFIG_PPC_BOOK3S_64 */ +#endif /* CONFIG_PPC_BARRIER_NOSPEC */ void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end) { |