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SubjectRe: [RFC PATCH v3 02/16] cxl/acpi: Add an acpi_cxl module for the CXL interconnect
Date
On 1/11/21 2:51 PM, Ben Widawsky wrote:
> diff --git a/drivers/cxl/Kconfig b/drivers/cxl/Kconfig
> new file mode 100644
> index 000000000000..68da926ba5b1
> --- /dev/null
> +++ b/drivers/cxl/Kconfig
> @@ -0,0 +1,36 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +menuconfig CXL_BUS
> + tristate "CXL (Compute Express Link) Devices Support"
> + help
> + CXL is a bus that is electrically compatible with PCI-E, but layers
> + three protocols on that signalling (CXL.io, CXL.cache, and CXL.mem).
> + The CXL.cache protocol allows devices to hold cachelines locally, the
> + CXL.mem protocol allows devices to be fully coherent memory targets,
> + the CXL.io protocol is equivalent to PCI-E. Say 'y' to enable support
> + for the configuration and management of devices supporting these
> + protocols.
> +
> +if CXL_BUS
> +
> +config CXL_BUS_PROVIDER
> + tristate
> +
> +config CXL_ACPI
> + tristate "CXL ACPI: Platform Support"
> + depends on ACPI
> + default CXL_BUS
> + select CXL_BUS_PROVIDER
> + help
> + Say 'y/m' to enable a driver (named "cxl_acpi.ko" when built
> + as a module) that will enable support for CXL.mem endpoint
> + devices. In general, CXL Platform Support is a prerequisite
> + for any CXL device driver that wants to claim ownership of a
> + component register space. By default platform firmware assumes
> + Linux is unaware of CXL capabilities and requires explicit
> + opt-in. This platform component also mediates resources
> + described by the CEDT (CXL Early Discovery Table). See
> + Chapter 9.14.1 CXL Early Discovery Table (CEDT) in the CXL 2.0
> + specification.
> +
> + If unsure say 'm'

End above sentence with a '.', please.

> +endif


--
~Randy

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