Hi all, After merging the final tree, today's linux-next build (i386 defconfig) failed like this: In file included from arch/x86/include/asm/elf.h:90:0, from include/linux/elf.h:7, from arch/x86/kernel/cpu/amd.c:4: arch/x86/include/asm/desc.h: In function 'native_set_ldt': arch/x86/include/asm/desc.h:199:3: error: implicit declaration of function 'this_cpu_read' [-Werror=implicit-function-declaration] Caused by commit a65a3870c856 ("x86: use this_cpu_xxx to replace percpu_xxx funcs"). I tried changing the include of asm/percpu.h to linux/percpu.h in arch/x86/include/asm/smp.h (the above is caused by smp_processor_id() using this_cpu_read()), but that made things worse. So I added an include of linux/percpu.h to arch/x86/include/asm/desc.h (but this seems a bit fragile). From: Stephen Rothwell Date: Fri, 20 Jan 2012 12:51:40 +1100 Subject: [PATCH] percpu: x86: fix smp_processor_id's need for this_cpu_read Signed-off-by: Stephen Rothwell --- arch/x86/include/asm/desc.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h index e95822d..3072a2d 100644 --- a/arch/x86/include/asm/desc.h +++ b/arch/x86/include/asm/desc.h @@ -6,6 +6,7 @@ #include #include +#include static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *info) { -- 1.7.9.rc0.23.g7e521 -- Cheers, Stephen Rothwell sfr@canb.auug.org.au