Catalin Marinas 5bb1cc0ff9 arm64: Ensure pmd_present() returns false after pmd_mknotpresent() ... Currently, pmd_present() only checks for a non-zero value, returning true even after pmd_mknotpresent() (which only clears the type bits). This patch converts pmd_present() to using pte_present(), similar to the other pmd_*() checks. As a side effect, it will return true for PROT_NONE mappings, though they are not yet used by the kernel with transparent huge pages. For consistency, also change pmd_mknotpresent() to only clear the PMD_SECT_VALID bit, even though the PMD_TABLE_BIT is already 0 for block mappings (no functional change). The unused PMD_SECT_PROT_NONE definition is removed as transparent huge pages use the pte page prot values. Fixes: 9c7e535fcc ("arm64: mm: Route pmd thp functions through pte equivalents") Cc: <stable@vger.kernel.org> # 3.15+ Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2016-05-06 12:46:53 +01:00
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asm	arm64: Ensure pmd_present() returns false after pmd_mknotpresent()	2016-05-06 12:46:53 +01:00
uapi/asm	arm64 updates for 4.6:	2016-03-17 20:03:47 -07:00