[PATCH v2 0/2] Arch-specific user pgtables ceiling

[Catalin Marinas <catalin.marinas@arm.com>]

That's the second version of the series introducing
USER_PGTABLES_CEILING and defining it to TASK_SIZE on ARM.

Russell, do you ack these patches (or let me know if you have further
comments)? I think it's better if they go upstream together rather than
one via akpm and the other via the arm tree.

Thanks.


Changes from v1:
- Only defining USER_PGTABLES_CEILING to TASK_SIZE when CONFIG_ARM_LPAE
  is enabled. The classic ARM MMU uses the default ceiling 0.
- Improved commit log stating that the shared page table freeing is
  already handled by pgd_free() for the ARM LPAE case.
- Cc'ed stable (starting with 3.3 when ARM LPAE was merged).


Catalin Marinas (1):
  arm: Set the page table freeing ceiling to TASK_SIZE

Hugh Dickins (1):
  mm: Allow arch code to control the user page table ceiling

 arch/arm/include/asm/pgtable.h |  9 +++++++++
 fs/exec.c                      |  4 ++--
 include/asm-generic/pgtable.h  | 10 ++++++++++
 mm/mmap.c                      |  4 ++--
 4 files changed, 23 insertions(+), 4 deletions(-)