From fe036a0605d60d6c81ffdcd6241e9ae0013fe235 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 19 Aug 2016 14:22:37 +0530 Subject: powerpc/64/kexec: Fix MMU cleanup on radix Just using the hash ops won't work anymore since radix will have NULL in there. Instead create an mmu_cleanup_all() function which will do the right thing based on the MMU mode. For Radix, for now I clear UPRT and the PTCR, effectively switching back to Radix with no partition table setup. Currently set it to NULL on BookE thought it might be a good idea to wipe the TLB there (Scott ?) Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Aneesh Kumar K.V Acked-by: Balbir Singh Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/mmu.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/powerpc/include/asm/mmu.h') diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index e2fb408f8398..79c989a05aa1 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -204,6 +204,10 @@ extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup; * make it match the size our of bolted TLB area */ extern u64 ppc64_rma_size; + +/* Cleanup function used by kexec */ +extern void mmu_cleanup_all(void); +extern void radix__mmu_cleanup_all(void); #endif /* CONFIG_PPC64 */ struct mm_struct; -- cgit v1.2.3