powerpc/mm: Fix infinite loop in hash fault with 4K page size
This is the same bug we fixed as part of 09567e7f ("powerpc/mm: Check paca psize is up to date for huge mappings"). Please check that for details. The difference here is that faults were happening on a 4K page at an address previously mapped by hugetlb. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Reviewed-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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