From 1fbe9cf2598dae3bd464d860bd89c67b1ff8682b Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 26 Nov 2012 17:41:08 +0000 Subject: powerpc: Build kernel with -mcmodel=medium Finally remove the two level TOC and build with -mcmodel=medium. Unfortunately we can't build modules with -mcmodel=medium due to the tricks the kernel module loader plays with percpu data: # -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. On older kernels we fall back to the two level TOC (-mminimal-toc) Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/oprofile/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/oprofile') diff --git a/arch/powerpc/oprofile/Makefile b/arch/powerpc/oprofile/Makefile index 73456c4cec28..751ec7bd5018 100644 --- a/arch/powerpc/oprofile/Makefile +++ b/arch/powerpc/oprofile/Makefile @@ -1,6 +1,6 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror -ccflags-$(CONFIG_PPC64) := -mno-minimal-toc +ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) obj-$(CONFIG_OPROFILE) += oprofile.o -- cgit v1.2.3