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| author | Michael Ellerman <mpe@ellerman.id.au> | 2018-07-28 02:06:34 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-08-07 17:32:23 +0300 |
| commit | 179ab1cbf883575c3a585bcfc0f2160f1d22a149 (patch) | |
| tree | eead3ee74946fc0b174966ef4fcf1fa02ae8e2fc /arch/powerpc/kernel/module.c | |
| parent | 6453b532f2c8856a80381e6b9a1f5ea2f12294df (diff) | |
| download | linux-179ab1cbf883575c3a585bcfc0f2160f1d22a149.tar.xz | |
powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC
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>
Diffstat (limited to 'arch/powerpc/kernel/module.c')
| -rw-r--r-- | arch/powerpc/kernel/module.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c index 1b3c6835e730..77371c9ef3d8 100644 --- a/arch/powerpc/kernel/module.c +++ b/arch/powerpc/kernel/module.c @@ -72,13 +72,15 @@ int module_finalize(const Elf_Ehdr *hdr, do_feature_fixups(powerpc_firmware_features, (void *)sect->sh_addr, (void *)sect->sh_addr + sect->sh_size); +#endif /* CONFIG_PPC64 */ +#ifdef CONFIG_PPC_BARRIER_NOSPEC sect = find_section(hdr, sechdrs, "__spec_barrier_fixup"); if (sect != NULL) do_barrier_nospec_fixups_range(barrier_nospec_enabled, (void *)sect->sh_addr, (void *)sect->sh_addr + sect->sh_size); -#endif +#endif /* CONFIG_PPC_BARRIER_NOSPEC */ sect = find_section(hdr, sechdrs, "__lwsync_fixup"); if (sect != NULL) |