From 179ab1cbf883575c3a585bcfc0f2160f1d22a149 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Sat, 28 Jul 2018 09:06:34 +1000 Subject: 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 Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/module.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/kernel/module.c') 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) -- cgit v1.2.3