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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-08-19 14:22:37 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-23 07:54:17 +1000 |
| commit | fe036a0605d60d6c81ffdcd6241e9ae0013fe235 (patch) | |
| tree | e4bd3548c3454415fd22cc0b243d4dfd452712ac /arch/powerpc/include | |
| parent | fc48bad53142c991a5280940fd7ee8d226697b2c (diff) | |
| download | linux-fe036a0605d60d6c81ffdcd6241e9ae0013fe235.tar.bz2 | |
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 <benh@kernel.crashing.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/mmu-book3e.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/mmu.h | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mmu-book3e.h b/arch/powerpc/include/asm/mmu-book3e.h index cd4f04a74802..b62a8d43a06c 100644 --- a/arch/powerpc/include/asm/mmu-book3e.h +++ b/arch/powerpc/include/asm/mmu-book3e.h @@ -313,6 +313,9 @@ extern int book3e_htw_mode; * return 1, indicating that the tlb requires preloading. */ #define HUGETLB_NEED_PRELOAD + +#define mmu_cleanup_all NULL + #endif #endif /* !__ASSEMBLY__ */ 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; |