diff options
Diffstat (limited to 'drivers/cxl/Kconfig')
| -rw-r--r-- | drivers/cxl/Kconfig | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/cxl/Kconfig b/drivers/cxl/Kconfig index 0ac53c422c31..ff4e78117b31 100644 --- a/drivers/cxl/Kconfig +++ b/drivers/cxl/Kconfig @@ -104,19 +104,29 @@ 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)" depends on CXL_REGION help CXL Region management and security operations potentially invalidate - the content of CPU caches without notifiying those caches to + the content of CPU caches without notifying those caches to invalidate the affected cachelines. The CXL Region driver attempts to invalidate caches when those events occur. If that invalidation fails the region will fail to enable. Reasons for cache |