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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: d4748276ae ("powerpc/64s: Improve local TLB flush for boot and MCE on POWER9")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
zero-colors
Michael Ellerman 2018-01-30 20:37:21 +11:00
parent 516c32f64f
commit 015eb1b89e
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/include/asm/book3s/64/tlbflush-radix.h
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@ -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);