Messages in this thread | | | Subject | Re: [CFT] MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself | From | Benjamin Herrenschmidt <> | Date | Fri, 22 Jan 2010 14:50:19 +1100 |
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On Wed, 2010-01-20 at 13:52 +0000, Russell King wrote: > On VIVT ARM, when we have multiple shared mappings of the same file > in the same MM, we need to ensure that we have coherency across all > copies. We do this via make_coherent() by making the pages > uncacheable. > > This used to work fine, until we allowed highmem with highpte - we > now have a page table which is mapped as required, and is not available > for modification via update_mmu_cache().
Looks good. I'll test when I'm back from LCA.
Cheers, Ben.
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