From 12b3d697c812aaf356e82d9e1f351fbb2ea97500 Mon Sep 17 00:00:00 2001 From: Robert Richter Date: Fri, 11 Jul 2025 17:15:27 +0200 Subject: cxl: Remove core/acpi.c and cxl core dependency on ACPI From Dave [1]: """ It was a mistake to introduce core/acpi.c and putting ACPI dependency on cxl_core when adding the extended linear cache support. """ Current implementation calls hmat_get_extended_linear_cache_size() of the ACPI subsystem. That external reference causes issue running cxl_test as there is no way to "mock" that function and ignore it when using cxl test. Instead of working around that using cxlrd ops and extensively expanding cxl_test code [1], just move HMAT calls out of the core module to cxl_acpi. Implement this by adding a @cache_size member to struct cxl_root_decoder. During initialization the cache size is determined and added to the root decoder object in cxl_acpi. Later on in cxl_core the cache_size parameter is used to setup extended linear caching. [1] https://patch.msgid.link/20250610172938.139428-1-dave.jiang@intel.com [ dj: Remove core/acpi.o from tools/testing/cxl/Kbuild ] [ dj: Add kdoc for cxlrd->cache_size ] Cc: Dave Jiang Signed-off-by: Robert Richter Reviewed-by: Alison Schofield Reviewed-by: Jonathan Cameron Reviewed-by: Dave Jiang Link: https://patch.msgid.link/20250711151529.787470-1-rrichter@amd.com Signed-off-by: Dave Jiang --- tools/testing/cxl/Kbuild | 1 - 1 file changed, 1 deletion(-) (limited to 'tools/testing') diff --git a/tools/testing/cxl/Kbuild b/tools/testing/cxl/Kbuild index 31a2d73c963f..d07f14cb7aa4 100644 --- a/tools/testing/cxl/Kbuild +++ b/tools/testing/cxl/Kbuild @@ -62,7 +62,6 @@ cxl_core-y += $(CXL_CORE_SRC)/hdm.o cxl_core-y += $(CXL_CORE_SRC)/pmu.o cxl_core-y += $(CXL_CORE_SRC)/cdat.o cxl_core-y += $(CXL_CORE_SRC)/ras.o -cxl_core-y += $(CXL_CORE_SRC)/acpi.o cxl_core-$(CONFIG_TRACING) += $(CXL_CORE_SRC)/trace.o cxl_core-$(CONFIG_CXL_REGION) += $(CXL_CORE_SRC)/region.o cxl_core-$(CONFIG_CXL_MCE) += $(CXL_CORE_SRC)/mce.o -- cgit v1.2.3