On Mon, Oct 12, 2020 at 09:31:16AM +0100, Will Deacon wrote: > On Fri, Oct 09, 2020 at 09:13:34AM -0700, Sami Tolvanen wrote: > > Allow CONFIG_LTO_CLANG and CONFIG_THINLTO to be enabled. > > > > Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx> > > Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> > > --- > > arch/arm64/Kconfig | 2 ++ > > 1 file changed, 2 insertions(+) > > > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > > index ad522b021f35..7016d193864f 100644 > > --- a/arch/arm64/Kconfig > > +++ b/arch/arm64/Kconfig > > @@ -72,6 +72,8 @@ config ARM64 > > select ARCH_USE_SYM_ANNOTATIONS > > select ARCH_SUPPORTS_MEMORY_FAILURE > > select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK > > + select ARCH_SUPPORTS_LTO_CLANG > > + select ARCH_SUPPORTS_THINLTO > > Please don't enable this for arm64 until we have the dependency stuff sorted > out. I posted patches [1] for this before, but I think they should be part > of this series as they don't make sense on their own. Oh, hm. We've been trying to trim down this series, since it's already quite large. Why can't [1] land first? It would make this easier to deal with, IMO. > [1] https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/log/?h=rwonce/read-barrier-depends -- Kees Cook
