Aneesh Kumar K.V 5769beaf18 powerpc/mm: Add proper pte access check helper for other platforms ... pte_access_premitted get called in get_user_pages_fast path. If we have marked the pte PROT_NONE, we should not allow a read access on the address. With the current implementation we are not checking the READ and only check for WRITE. This is needed on archs like ppc64 that implement PROT_NONE using _PAGE_USER access instead of _PAGE_PRESENT. Also add pte_user check just to make sure we are not accessing kernel mapping. Even though there is code duplication, keeping the low level pte accessors different for different platforms helps in code readability. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-12-22 22:28:40 +11:00
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asm	powerpc/mm: Add proper pte access check helper for other platforms	2017-12-22 22:28:40 +11:00
uapi/asm	powerpc updates for 4.15	2017-11-16 12:47:46 -08:00