Aneesh Kumar K.V a145abf12c powerpc/mm/radix: Flush page walk cache when freeing page table ... Even though a tlb_flush() does a flush with invalidate all cache, we can end up doing an RCU page table free before calling tlb_flush(). That means we can have page walk cache entries even after we free the page table pages. This can result in us doing wrong page table walk. Avoid this by doing pwc flush on every page table free. We can't batch the pwc flush, because the rcu call back function where we free the page table pages doesn't have information of the mmu gather. Thus we have to do a pwc on every page table page freed. Note: I also removed the dummy tlb_flush_pgtable call functions for hash 32. Fixes: 1a472c9dba ("powerpc/mm/radix: Add tlbflush routines") Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2016-06-10 16:14:52 +10:00
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32	powerpc/mm/radix: Flush page walk cache when freeing page table	2016-06-10 16:14:52 +10:00
64	powerpc/mm/radix: Flush page walk cache when freeing page table	2016-06-10 16:14:52 +10:00
pgalloc.h	powerpc/mm/radix: Flush page walk cache when freeing page table	2016-06-10 16:14:52 +10:00
pgtable.h	powerpc/mm: Move PTE bits from generic functions to hash64 functions.	2015-12-14 15:19:08 +11:00