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authorDan Williams <dan.j.williams@intel.com>2018-11-07 15:31:23 -0800
committerDan Williams <dan.j.williams@intel.com>2019-01-06 21:41:55 -0800
commitd200781ef237a354d918ceff5cee350d88a93d42 (patch)
treeafd53c6e25a57e31b8c0c8542e086bd50840bc9a /tools/testing/nvdimm
parent89ec9f2cfa36cc5fca2fb445ed221bb9add7b536 (diff)
device-dax: Add support for a dax override driver
Introduce the 'new_id' concept for enabling a custom device-driver attach policy for dax-bus drivers. The intended use is to have a mechanism for hot-plugging device-dax ranges into the page allocator on-demand. With this in place the default policy of using device-dax for performance differentiated memory can be overridden by user-space policy that can arrange for the memory range to be managed as 'System RAM' with user-defined NUMA and other performance attributes. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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