From: Michael Ellerman Date: Fri, 12 Oct 2018 11:09:09 +0000 (+1100) Subject: powerpc: Fix stackprotector detection for non-glibc toolchains X-Git-Tag: v5.4-rc1~2276^2~115 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bf6cbd0c87f30d0e4401be91a8161ce11079027a;p=platform%2Fkernel%2Flinux-rpi.git powerpc: Fix stackprotector detection for non-glibc toolchains If GCC is not built with glibc support then we must explicitly tell it which register to use for TLS mode stack protector, otherwise it will error out and the cc-option check will fail. Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 1888636..3d00811 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -180,7 +180,8 @@ config PPC select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_CBPF_JIT if !PPC64 - select HAVE_STACKPROTECTOR if $(cc-option,-mstack-protector-guard=tls) + select HAVE_STACKPROTECTOR if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13) + select HAVE_STACKPROTECTOR if PPC32 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r2) select HAVE_CONTEXT_TRACKING if PPC64 select HAVE_DEBUG_KMEMLEAK select HAVE_DEBUG_STACKOVERFLOW