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When platform firmware is committed to publishing EFI_CONVENTIONAL_MEMORY in the memory map, but CXL fails to assemble the region, dax_hmem can attempt to attach a dax device to the memory range. Take advantage of the new ability to support multiple "hmem_platform" devices, and to enable regression testing of several scenarios: * CXL correctly assembles a region, check dax_hmem fails to attach dax * CXL fails to assemble a region, check dax_hmem successfully attaches dax * Check that loading the dax_cxl driver loads the dax_hmem driver * Attempt to race cxl_mock_mem async probe vs dax_hmem probe flushing. Check that both positive and negative cases. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Alison Schofield <alison.schofield@intel.com> Tested-by: Alison Schofield <alison.schofield@intel.com> Link: https://patch.msgid.link/20260327052821.440749-10-dan.j.williams@intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com>
14 lines
380 B
14 lines
380 B