arm64: mm: fix thinko in non-global page table attribute check

The routine pgattr_change_is_safe() was extended in commit 4e6020565596
("arm64: mm: Permit transitioning from Global to Non-Global without BBM")
to permit changing the nG attribute from not set to set, but did so in a
way that inadvertently disallows such changes if other permitted attribute
changes take place at the same time. So update the code to take this into
account.

Fixes: 4e6020565596 ("arm64: mm: Permit transitioning from Global to ...")
Cc: <[email protected]> # 4.14.x-
Acked-by: Mark Rutland <[email protected]>
Reviewed-by: Marc Zyngier <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>

0 files changed, 0 insertions, 0 deletions