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Thu, 10 Oct 2024 19:15:29 -0700 (PDT) Received: from archie.me ([103.124.138.155]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20c8c350ee8sm15532475ad.295.2024.10.10.19.15.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Oct 2024 19:15:29 -0700 (PDT) Received: by archie.me (Postfix, from userid 1000) id 99E6E4374224; Fri, 11 Oct 2024 09:15:23 +0700 (WIB) Date: Fri, 11 Oct 2024 09:15:23 +0700 From: Bagas Sanjaya To: ira.weiny@intel.com, Dave Jiang , Fan Ni , Jonathan Cameron , Navneet Singh , Jonathan Corbet , Andrew Morton Cc: Dan Williams , Davidlohr Bueso , Alison Schofield , Vishal Verma , linux-btrfs@vger.kernel.org, linux-cxl@vger.kernel.org, linux-doc@vger.kernel.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 13/28] cxl/mem: Expose DCD partition capabilities in sysfs Message-ID: References: <20241007-dcd-type2-upstream-v4-0-c261ee6eeded@intel.com> <20241007-dcd-type2-upstream-v4-13-c261ee6eeded@intel.com> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="oaAeGPAZ1RHcucEh" Content-Disposition: inline In-Reply-To: <20241007-dcd-type2-upstream-v4-13-c261ee6eeded@intel.com> --oaAeGPAZ1RHcucEh Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Oct 07, 2024 at 06:16:19PM -0500, ira.weiny@intel.com wrote: > +What: /sys/bus/cxl/devices/memX/dcY/qos_class > +Date: December, 2024 > +KernelVersion: v6.13 > +Contact: linux-cxl@vger.kernel.org > +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. > =20 Thanks. --=20 An old man doll... just what I always wanted! - Clara --oaAeGPAZ1RHcucEh Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSSYQ6Cy7oyFNCHrUH2uYlJVVFOowUCZwiKOwAKCRD2uYlJVVFO o8NIAQCZrs5IPtJRWJ3wy4dqN3eWUxQgLyspoOpH7V3EXTsEbwEAuEOVomNyr5Hp JxCkGB4XGrygV0ZUzfdlEEXL1qkYYgo= =v9WZ -----END PGP SIGNATURE----- --oaAeGPAZ1RHcucEh--