[redhat] New configs in drivers/cxl
Hi,
As part of the ongoing rebase effort, the following configuration options need to be reviewed.
As a reminder, the ARK configuration flow involves moving unreviewed configuration options from the pending directory to the ark directory. In the diff below, options are removed from the pending directory and added to the ark hierarchy. The final options that need to be ACKed are the files that are being added to the ark hierarchy.
If the value for a file that is added should be changed, please reply with a better option.
CONFIG_CXL_MEM:
The CXL.mem protocol allows a device to act as a provider of "System RAM" and/or "Persistent Memory" that is fully coherent as if the memory was attached to the typical CPU memory controller.
Say 'y/m' to enable a driver (named "cxl_mem.ko" when built as a module) that will attach to CXL.mem devices for configuration, provisioning, and health monitoring. This driver is required for dynamic provisioning of CXL.mem attached memory which is a prerequisite for persistent memory support. Typically volatile memory is mapped by platform firmware and included in the platform memory map, but in some cases the OS is responsible for mapping that memory. See Chapter 2.3 Type 3 CXL Device in the CXL 2.0 specification.
If unsure say 'm'.
Symbol: CXL_MEM [=n] Type : tristate Defined at drivers/cxl/Kconfig:16 Prompt: CXL.mem: Memory Devices Depends on: CXL_BUS [=y] Location: -> Device Drivers -> PCI support (PCI [=y]) -> CXL (Compute Express Link) Devices Support (CXL_BUS [=y])
Signed-off-by: Fedora Kernel Team kernel-team@fedoraproject.org