diff options
| author | Oliver O'Halloran <oohall@gmail.com> | 2017-04-12 09:32:13 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2017-04-12 17:06:02 +1000 |
| commit | a33297c95d6bce1713c6f0b3f8bdc8e8395d647f (patch) | |
| tree | d4a9ff3a111407ed6d145cccb44a7f02963e98fb /arch | |
| parent | 38ea259e2f891d3817f8e2ebdcf1914b4d6af89c (diff) | |
mm/huge_memory.c: deposit a pgtable for DAX PMD faults when required
Although all architectures use a deposited page table for THP on anonymous VMAs
some architectures (s390 and powerpc) require the deposited storage even for
file backed VMAs due to quirks of their MMUs. This patch adds support for
depositing a table in DAX PMD fault handling path for archs that require it.
Other architectures should see no functional changes.
Link: http://lkml.kernel.org/r/20170411174233.21902-3-oohall@gmail.com
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: linux-nvdimm@ml01.01.org
Cc: Oliver O'Halloran <oohall@gmail.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions