diff options
Diffstat (limited to 'arch/powerpc/Makefile')
| -rw-r--r-- | arch/powerpc/Makefile | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 78c2b024371a..31d8965e0847 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -67,7 +67,24 @@ LDFLAGS_vmlinux-y := -Bstatic LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) -CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=no -mcall-aixdesc +ifeq ($(CONFIG_PPC64),y) +ifeq ($(call cc-option-yn,-mcmodel=medium),y) + # -mcmodel=medium breaks modules because it uses 32bit offsets from + # the TOC pointer to create pointers where possible. Pointers into the + # percpu data area are created by this method. + # + # The kernel module loader relocates the percpu data section from the + # original location (starting with 0xd...) to somewhere in the base + # kernel percpu data space (starting with 0xc...). We need a full + # 64bit relocation for this to work, hence -mcmodel=large. + KBUILD_CFLAGS_MODULE += -mcmodel=large +else + export NO_MINIMAL_TOC := -mno-minimal-toc +endif +endif + +CFLAGS-$(CONFIG_PPC64) := -mtraceback=no -mcall-aixdesc +CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) |