Aneesh Kumar K.V f72a85e347 powerpc/mm/book3s/64: Add proper pte access check helper ... 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 RWX access instead of _PAGE_PRESENT. Also add pte_user check just to make sure we are not accessing kernel mapping. 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 22:28:35 +11:00
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asm	powerpc/mm/book3s/64: Add proper pte access check helper	2017-12-22 22:28:35 +11:00
uapi/asm	powerpc updates for 4.15	2017-11-16 12:47:46 -08:00