diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2023-02-10 12:06:27 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2023-02-11 04:32:43 +0300 |
| commit | 45d235c56b2bc51749af9cc8fe6ace18aa8b81be (patch) | |
| tree | 02b51eaf44c7e6fc28afe1d74d388d00cb7c7208 /drivers/cxl | |
| parent | 93c177fd6ff0655a5fa43ec945a57d7b0200ad80 (diff) | |
| download | linux-45d235c56b2bc51749af9cc8fe6ace18aa8b81be.tar.xz | |
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 <vishal.l.verma@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Gregory Price <gregory.price@memverge.com>
Tested-by: Fan Ni <fan.ni@samsung.com>
Link: https://lore.kernel.org/r/167601998765.1924368.258370414771847699.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl')
| -rw-r--r-- | drivers/cxl/Kconfig | 12 |
1 files changed, 11 insertions, 1 deletions
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)" |