From: Alastair D'Silva <alast...@d-silva.org>
This series adds bounds checks for hotplugged memory, ensuring that
it is within the physically addressable range (for platforms that
define MAX_(POSSIBLE_)PHYSMEM_BITS.
This allows for early failure, rather than attempting to access
bogus section numbers.
Changelog:
V7:
- Cast PFN_PHYS as u64 since it's type is platform dependant
V6:
- Fix printf formats
V5:
- Factor out calculation into max_allowed var
- Declare unchanging vars as const
- Use PFN_PHYS macro instead of shifting by PAGE_SHIFT
V4:
- Relocate call to __add_pages
- Add a warning when the addressable check fails
V3:
- Perform the addressable check before we take the hotplug lock
V2:
- Don't use MAX_POSSIBLE_PHYSMEM_BITS as it's wider that what
may be available
Alastair D'Silva (1):
memory_hotplug: Add a bounds check to __add_pages
mm/memory_hotplug.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
--
2.21.0
