From 45d235c56b2bc51749af9cc8fe6ace18aa8b81be Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 10 Feb 2023 01:06:27 -0800 Subject: cxl/region: Enable CONFIG_CXL_REGION to be toggled Add help text and a label so the CXL_REGION config option can be toggled. This is mainly to enable compile testing without region support. Reviewed-by: Vishal Verma Reviewed-by: Jonathan Cameron Reviewed-by: Dave Jiang Reviewed-by: Gregory Price Tested-by: Fan Ni Link: https://lore.kernel.org/r/167601998765.1924368.258370414771847699.stgit@dwillia2-xfh.jf.intel.com Signed-off-by: Dan Williams --- drivers/cxl/Kconfig | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'drivers/cxl') diff --git a/drivers/cxl/Kconfig b/drivers/cxl/Kconfig index 0ac53c422c31..163c094e67ae 100644 --- a/drivers/cxl/Kconfig +++ b/drivers/cxl/Kconfig @@ -104,12 +104,22 @@ config CXL_SUSPEND depends on SUSPEND && CXL_MEM config CXL_REGION - bool + bool "CXL: Region Support" default CXL_BUS # For MAX_PHYSMEM_BITS depends on SPARSEMEM select MEMREGION select GET_FREE_REGION + help + Enable the CXL core to enumerate and provision CXL regions. A CXL + region is defined by one or more CXL expanders that decode a given + system-physical address range. For CXL regions established by + platform-firmware this option enables memory error handling to + identify the devices participating in a given interleaved memory + range. Otherwise, platform-firmware managed CXL is enabled by being + placed in the system address map and does not need a driver. + + If unsure say 'y' config CXL_REGION_INVALIDATION_TEST bool "CXL: Region Cache Management Bypass (TEST)" -- cgit v1.2.3