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| author | Oliver O'Halloran <oohall@gmail.com> | 2017-06-28 11:32:33 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-02 20:40:27 +1000 |
| commit | b584c2544041707ea041748dbfbb1081289c6cf5 (patch) | |
| tree | d3b0f56dbf44a9194740c402a4f648feb5844cca /arch/powerpc/include/asm/book3s/64/pgtable.h | |
| parent | d7d9b612f1b0ac154071bafc02bc9b7b879d7363 (diff) | |
| download | op-kernel-dev-b584c2544041707ea041748dbfbb1081289c6cf5.zip op-kernel-dev-b584c2544041707ea041748dbfbb1081289c6cf5.tar.gz | |
powerpc/vmemmap: Add altmap support
Adds support to powerpc for the altmap feature of ZONE_DEVICE memory. An
altmap is a driver provided region that is used to provide the backing
storage for the struct pages of ZONE_DEVICE memory. In situations where
large amount of ZONE_DEVICE memory is being added to the system the
altmap reduces pressure on main system memory by allowing the mm/
metadata to be stored on the device itself rather in main memory.
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/pgtable.h')
0 files changed, 0 insertions, 0 deletions
