From 7d3eb23c4ccf457b52cafdca1a7b20cddf29e021 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 8 Sep 2021 22:13:21 -0700 Subject: tools/testing/cxl: Introduce a mock memory device + driver Introduce an emulated device-set plus driver to register CXL memory devices, 'struct cxl_memdev' instances, in the mock cxl_test topology. This enables the development of HDM Decoder (Host-managed Device Memory Decoder) programming flow (region provisioning) in an environment that can be updated alongside the kernel as it gains more functionality. Whereas the cxl_pci module looks for CXL memory expanders on the 'pci' bus, the cxl_mock_mem module attaches to CXL expanders on the platform bus emitted by cxl_test. Acked-by: Ben Widawsky Reported-by: kernel test robot Reviewed-by: Jonathan Cameron Link: https://lore.kernel.org/r/163116440099.2460985.10692549614409346604.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams --- tools/testing/cxl/Kbuild | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools/testing/cxl/Kbuild') diff --git a/tools/testing/cxl/Kbuild b/tools/testing/cxl/Kbuild index 63a4a07e71c4..86deba8308a1 100644 --- a/tools/testing/cxl/Kbuild +++ b/tools/testing/cxl/Kbuild @@ -33,4 +33,6 @@ cxl_core-y += $(CXL_CORE_SRC)/memdev.o cxl_core-y += $(CXL_CORE_SRC)/mbox.o cxl_core-y += config_check.o +cxl_core-y += mock_pmem.o + obj-m += test/ -- cgit v1.2.3