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authorCatalin Marinas <catalin.marinas@arm.com>2013-02-18 20:51:20 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2013-02-21 17:25:37 +0400
commit69dde4c52dbac2891b49ff9723d9c84efc5baf6f (patch)
tree771af8f80b5cf838b164613d5319777f30d7e484 /drivers/amba
parent70264367a243a68b1d5636ffb570183449803cbe (diff)
downloadlinux-69dde4c52dbac2891b49ff9723d9c84efc5baf6f.tar.xz
ARM: 7654/1: Preserve L_PTE_VALID in pte_modify()
Following commit 26ffd0d4 (ARM: mm: introduce present, faulting entries for PAGE_NONE), if a page has been mapped as PROT_NONE, the L_PTE_VALID bit is cleared by the set_pte_ext() code. With LPAE the software and hardware pte share the same location and subsequent modifications of pte range (change_protection()) will leave the L_PTE_VALID bit cleared. This patch adds the L_PTE_VALID bit to the newprot mask in pte_modify(). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Subash Patel <subash.rp@samsung.com> Tested-by: Subash Patel <subash.rp@samsung.com> Acked-by: Will Deacon <will.deacon@arm.com> Cc: <stable@vger.kernel.org> # 3.8.x Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/amba')
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