| commit | 55cef91a5d553265f03fe159f9fcdfac36902248 | |
| author | Paul Mundt <lethal@linux-sh.org> | |
| Tue, 16 Feb 2010 08:14:04 +0000 (16 17:14 +0900) | ||
| committer | Paul Mundt <lethal@linux-sh.org> | |
| Tue, 16 Feb 2010 08:14:04 +0000 (16 17:14 +0900) | ||
| tree | ae0dc74566ef0c8c80390d441ba690b28642b1ba | treesnapshot (tar.gz zip) |
| parent | 319c2cc761505ee54a9536c5d0b9c2ee3fb33866 | commitdiff |
sh: Prevent fixed slot PMB remapping from clobbering boot entries.
The PMB initialization code walks the entries and synchronizes the
software PMB state with the hardware mappings, preserving the slot index.
Unfortunately pmb_alloc() only tested the bit position in the entry map
and failed to set it, resulting in subsequent remaps being able to be
dynamically assigned a slot that trampled an existing boot mapping with
general badness ensuing.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The PMB initialization code walks the entries and synchronizes the
software PMB state with the hardware mappings, preserving the slot index.
Unfortunately pmb_alloc() only tested the bit position in the entry map
and failed to set it, resulting in subsequent remaps being able to be
dynamically assigned a slot that trampled an existing boot mapping with
general badness ensuing.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| arch/sh/mm/pmb.c | diffblobblamehistory |