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Thu, 27 Mar 2025 05:36:10 -0700 (PDT) Received: from gourry-fedora-PF4VCD3F ([207.164.135.99]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6eb3efc5bbesm79616526d6.88.2025.03.27.05.36.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Mar 2025 05:36:10 -0700 (PDT) Date: Thu, 27 Mar 2025 08:36:07 -0400 From: Gregory Price To: Yuquan Wang Cc: Jonathan Cameron , lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org, linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [LSF/MM] CXL Boot to Bash - Section 0: ACPI and Linux Resources Message-ID: References: <20250313165539.000001f4@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: F1CEBA001E X-Stat-Signature: y8aiemfa5faf16kzqwne98dz7x6zd6pw X-Rspam-User: X-HE-Tag: 1743078971-761655 X-HE-Meta: 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 HAOuLddH nV5vGV2OcpUhEJ0jAgaq0T+kGkLQZLy/8kOt5EYdMT6D/jlRzjewMJDL8/CxFI6R9kxVnffc6EO3r3d6qdMEtGfwz29qhI6zW+I9V0Q9LZcnSKkJTGhDLZnCLY7C3a8JYZ7Cc0E9NfKKxm7jNTxwDNWbc0FEJhVzpG1tfi4SVMeaKEbdO+TeCWt4UDAnQIx8gRzdnv3g8vOD2ICq/FFivpetH2VhnOUnxSEsbvAQPzFWsGk/QX/uUGt8Xks0+Y1WoIxbmI3BxAgRqBkKwn/G4WsqhyGigsYU0jyHjmecsrdyxcSu/rNirjWZNbned8SSByVBOjkPK8th6huo= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, Mar 27, 2025 at 05:34:54PM +0800, Yuquan Wang wrote: > > In the future, srat.c would add one seperate NUMA node for each > Generic Port in SRAT. > > System firmware should know the performance characteristics between > CPU/GI to the GP, and the static HMAT should include this coordinate. > > Is my understanding right? > > HMAT is static configuration data. A GI/GP might not have its performance data known until the device is added. In this case, the HMAT may only contain generic (inaccurate) information - or more likely just nothing. It's up to the platform vendor. ~Gregory