From 015eb1b89e959c9349f0a01803fb8ed1ced36f09 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 30 Jan 2018 20:37:21 +1100 Subject: [PATCH] powerpc/mm/radix: Fix build error when RADIX_MMU=n The recent TLB flush rework broke the build when the Radix MMU is disabled at build time, eg: (.text+0x264): undefined reference to `.radix__tlbiel_all' We could add an empty version, but if we ever called it by accident that would indicate a bad bug, so add a stub that just WARNs if we do. Fixes: d4748276ae14 ("powerpc/64s: Improve local TLB flush for boot and MCE on POWER9") Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/book3s/64/tlbflush-radix.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h index b8f9ad587087..8eea90f80e45 100644 --- a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h @@ -11,7 +11,11 @@ static inline int mmu_get_ap(int psize) return mmu_psize_defs[psize].ap; } +#ifdef CONFIG_PPC_RADIX_MMU extern void radix__tlbiel_all(unsigned int action); +#else +static inline void radix__tlbiel_all(unsigned int action) { WARN_ON(1); }; +#endif extern void radix__flush_hugetlb_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); -- 2.39.5