On Mon, Oct 07, 2024 at 06:16:19PM -0500, ira.weiny@xxxxxxxxx wrote: > +What: /sys/bus/cxl/devices/memX/dcY/qos_class > +Date: December, 2024 > +KernelVersion: v6.13 > +Contact: linux-cxl@xxxxxxxxxxxxxxx > +Description: > + (RO) Dynamic Capacity (DC) region information. Devices only > + export dcY if DCD partition Y is supported. For CXL host > + platforms that support "QoS Telemmetry" this attribute conveys > + a comma delimited list of platform specific cookies that > + identifies a QoS performance class for the persistent partition > + of the CXL mem device. These class-ids can be compared against > + a similar "qos_class" published for a root decoder. While it is > + not required that the endpoints map their local memory-class to > + a matching platform class, mismatches are not recommended and > + there are platform specific performance related side-effects "... mismatches are not recommended as there are ..." > + that may result. First class-id is displayed. > Thanks. -- An old man doll... just what I always wanted! - Clara
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