Commit 45d235c5 authored by Dan Williams's avatar Dan Williams
Browse files

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: default avatarVishal Verma <vishal.l.verma@intel.com>
Reviewed-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: default avatarDave Jiang <dave.jiang@intel.com>
Reviewed-by: default avatarGregory Price <gregory.price@memverge.com>
Tested-by: default avatarFan Ni <fan.ni@samsung.com>
Link: https://lore.kernel.org/r/167601998765.1924368.258370414771847699.stgit@dwillia2-xfh.jf.intel.com


Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 93c177fd

drivers/cxl/Kconfig

+11 −1
Original line number Diff line number Diff line
@@ -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)"