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author | Dan Williams <dan.j.williams@intel.com> | 2016-01-15 16:56:22 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-15 17:56:32 -0800 |
commit | 4b94ffdc4163bae1ec73b6e977ffb7a7da3d06d3 (patch) | |
tree | f653da252999e8c1f45a2c7ae18fb1c241b4a300 /arch/mn10300 | |
parent | 9476df7d80dfc425b37bfecf1d89edf8ec81fcb6 (diff) | |
download | op-kernel-dev-4b94ffdc4163bae1ec73b6e977ffb7a7da3d06d3.zip op-kernel-dev-4b94ffdc4163bae1ec73b6e977ffb7a7da3d06d3.tar.gz |
x86, mm: introduce vmem_altmap to augment vmemmap_populate()
In support of providing struct page for large persistent memory
capacities, use struct vmem_altmap to change the default policy for
allocating memory for the memmap array. The default vmemmap_populate()
allocates page table storage area from the page allocator. Given
persistent memory capacities relative to DRAM it may not be feasible to
store the memmap in 'System Memory'. Instead vmem_altmap represents
pre-allocated "device pages" to satisfy vmemmap_alloc_block_buf()
requests.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reported-by: kbuild test robot <lkp@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mn10300')
0 files changed, 0 insertions, 0 deletions