Hi Will, On 2018/1/5 21:12, Will Deacon wrote: > diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c > index 5f7097d0cd12..d99b36555a16 100644 > --- a/arch/arm64/mm/context.c > +++ b/arch/arm64/mm/context.c > @@ -246,6 +246,8 @@ asmlinkage void post_ttbr_update_workaround(void) > "ic iallu; dsb nsh; isb", > ARM64_WORKAROUND_CAVIUM_27456, > CONFIG_CAVIUM_ERRATUM_27456)); > + > + arm64_apply_bp_hardening(); > }
post_ttbr_update_workaround was used for fix Cavium erratum 2745? so does that means, if we do not have this erratum, we do not need arm64_apply_bp_hardening()? when mm_swtich and kernel_exit? >From the code logical, it seems not only related to erratum 2745 anymore? should it be renamed? Thanks Yisheng
