Christophe Leroy 810e9f86f3 powerpc/nohash: fix pte_access_permitted() ... Commit 5769beaf18 ("powerpc/mm: Add proper pte access check helper for other platforms") replaced generic pte_access_permitted() by an arch specific one. The generic one is defined as (pte_present(pte) && (!(write) || pte_write(pte))) The arch specific one is open coded checking that _PAGE_USER and _PAGE_WRITE (_PAGE_RW) flags are set, but lacking to check that _PAGE_RO and _PAGE_PRIVILEGED are unset, leading to a useless test on targets like the 8xx which defines _PAGE_RW and _PAGE_USER as 0. Commit 5fa5b16be5 ("powerpc/mm/hugetlb: Use pte_access_permitted for hugetlb access check") replaced some tests performed with pte helpers by a call to pte_access_permitted(), leading to the same issue. This patch rewrites powerpc/nohash pte_access_permitted() using pte helpers. Fixes: 5769beaf18 ("powerpc/mm: Add proper pte access check helper for other platforms") Fixes: 5fa5b16be5 ("powerpc/mm/hugetlb: Use pte_access_permitted for hugetlb access check") Cc: stable@vger.kernel.org # v4.15+ Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2018-08-23 12:15:58 +10:00
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asm	powerpc/nohash: fix pte_access_permitted()	2018-08-23 12:15:58 +10:00
uapi/asm	powerpc: Wire up io_pgetevents	2018-06-23 21:43:21 +10:00