Will Deacon 6245318869 ARM: 8578/1: mm: ensure pmd_present only checks the valid bit ... In a subsequent patch, pmd_mknotpresent will clear the valid bit of the pmd entry, resulting in a not-present entry from the hardware's perspective. Unfortunately, pmd_present simply checks for a non-zero pmd value and will therefore continue to return true even after a pmd_mknotpresent operation. Since pmd_mknotpresent is only used for managing huge entries, this is only an issue for the 3-level case. This patch fixes the 3-level pmd_present implementation to take into account the valid bit. For bisectability, the change is made before the fix to pmd_mknotpresent. [catalin.marinas@arm.com: comment update regarding pmd_mknotpresent patch] Fixes: 8d96250700 ("ARM: mm: Transparent huge page support for LPAE systems.") Cc: <stable@vger.kernel.org> # 3.11+ Cc: Russell King <linux@armlinux.org.uk> Cc: Steve Capper <Steve.Capper@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2016-06-09 17:51:47 +01:00
..
asm	ARM: 8578/1: mm: ensure pmd_present only checks the valid bit	2016-06-09 17:51:47 +01:00
debug	The i.MX SoC update for 4.6:	2016-03-02 23:30:17 +01:00
uapi/asm	ARM: wire up preadv2 and pwritev2 syscalls	2016-04-07 21:57:02 +01:00