Re: [PATCH 05/14] cxl/mem: Register CXL memX devices

[David Rientjes]

On Fri, 29 Jan 2021, Ben Widawsky wrote:

> diff --git a/Documentation/ABI/testing/sysfs-bus-cxl b/Documentation/ABI/testing/sysfs-bus-cxl
> new file mode 100644
> index 000000000000..fe7b87eba988
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-bus-cxl
> @@ -0,0 +1,26 @@
> +What:		/sys/bus/cxl/devices/memX/firmware_version
> +Date:		December, 2020
> +KernelVersion:	v5.12
> +Contact:	linux-cxl@xxxxxxxxxxxxxxx
> +Description:
> +		(RO) "FW Revision" string as reported by the Identify
> +		Memory Device Output Payload in the CXL-2.0
> +		specification.
> +
> +What:		/sys/bus/cxl/devices/memX/ram/size
> +Date:		December, 2020
> +KernelVersion:	v5.12
> +Contact:	linux-cxl@xxxxxxxxxxxxxxx
> +Description:
> +		(RO) "Volatile Only Capacity" as reported by the
> +		Identify Memory Device Output Payload in the CXL-2.0
> +		specification.
> +
> +What:		/sys/bus/cxl/devices/memX/pmem/size
> +Date:		December, 2020
> +KernelVersion:	v5.12
> +Contact:	linux-cxl@xxxxxxxxxxxxxxx
> +Description:
> +		(RO) "Persistent Only Capacity" as reported by the
> +		Identify Memory Device Output Payload in the CXL-2.0
> +		specification.

Aren't volatile and persistent capacities expressed in multiples of 256MB?