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 <[email protected]>
Reported-by: Subash Patel <[email protected]>
Tested-by: Subash Patel <[email protected]>
Acked-by: Will Deacon <[email protected]>
Cc: <[email protected]> # 3.8.x
Signed-off-by: Russell King <[email protected]>

0 files changed, 0 insertions, 0 deletions