Aneesh Kumar K.V bd0dbb73e0 powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid. ... When splitting a huge pmd pte, we need to mark the pmd entry invalid. We can do that by clearing _PAGE_PRESENT bit. But then that will be taken as a swap pte. In order to differentiate between the two use a software pte bit when invalidating. For regular pte, due to bd5050e38a ("powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang") we need to mark the pte entry invalid when relaxing access permission. Instead of marking pte_none which can result in different page table walk routines possibly skipping this pte entry, invalidate it but still keep it marked present. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2018-08-23 12:16:01 +10:00
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asm	powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid.	2018-08-23 12:16:01 +10:00
uapi/asm	powerpc: Wire up io_pgetevents	2018-06-23 21:43:21 +10:00