On Wed, 2016-08-06 at 14:25:51 UTC, "Aneesh Kumar K.V" wrote: > 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. > Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
Applied to powerpc fixes, thanks. https://git.kernel.org/powerpc/c/a145abf12c9f7d30d8c330c9d8 cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
