diff options
author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-08-19 08:52:37 (GMT) |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-22 21:54:17 (GMT) |
commit | fe036a0605d60d6c81ffdcd6241e9ae0013fe235 (patch) | |
tree | e4bd3548c3454415fd22cc0b243d4dfd452712ac /arch/powerpc/mm/pgtable-book3s64.c | |
parent | fc48bad53142c991a5280940fd7ee8d226697b2c (diff) | |
download | linux-fe036a0605d60d6c81ffdcd6241e9ae0013fe235.tar.xz |
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/mm/pgtable-book3s64.c')
-rw-r--r-- | arch/powerpc/mm/pgtable-book3s64.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable-book3s64.c b/arch/powerpc/mm/pgtable-book3s64.c index 7328886..f4f437c 100644 --- a/arch/powerpc/mm/pgtable-book3s64.c +++ b/arch/powerpc/mm/pgtable-book3s64.c @@ -116,3 +116,12 @@ void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, return; } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ + +/* For use by kexec */ +void mmu_cleanup_all(void) +{ + if (radix_enabled()) + radix__mmu_cleanup_all(); + else if (mmu_hash_ops.hpte_clear_all) + mmu_hash_ops.hpte_clear_all(); +} |