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powerpc/64s: Use contiguous PMD/PUD instead of HUGEPD
On book3s/64, the only user of hugepd is hash in 4k mode. All other setups (hash-64, radix-4, radix-64) use leaf PMD/PUD. Rework hash-4k to use contiguous PMD and PUD instead. In that setup there are only two huge page sizes: 16M and 16G. 16M sits at PMD level and 16G at PUD level. pte_update doesn't know page size, lets use the same trick as hpte_need_flush() to get page size from segment properties. That's not the most efficient way but let's do that until callers of pte_update() provide page size instead of just a huge flag. Signed-off-by: Christophe Leroy <[email protected]> --- v3: Add missing pmd_leaf_size() and pud_leaf_size()
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