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Wed, 14 Jun 2023 12:29:16 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ6VSeKSnJ4q2Grd86VOZO4UmN2kc4oJr/dthFtCqNVxFSKRuNSEG8H1f4udnqvStc2jsFz9pw== X-Received: by 2002:a81:6c12:0:b0:56d:cbd:4ee9 with SMTP id h18-20020a816c12000000b0056d0cbd4ee9mr2483238ywc.35.1686770956589; Wed, 14 Jun 2023 12:29:16 -0700 (PDT) Received: from localhost ([2600:1700:1d0:5e50:317c:310a:6aea:8ca]) by smtp.gmail.com with ESMTPSA id y202-20020a81a1d3000000b0056d069f4bc9sm478029ywg.82.2023.06.14.12.29.15 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jun 2023 12:29:15 -0700 (PDT) From: Michael Reed To: kernel-team@lists.ubuntu.com Subject: [SRU J/K/L][PATCH 1/1] UBUNTU: [Config] Intel Sapphire Rapids HBM support needs CONFIG_NUMA_EMU Date: Wed, 14 Jun 2023 14:29:11 -0500 Message-Id: <20230614192911.16448-2-michael.reed@canonical.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230614192911.16448-1-michael.reed@canonical.com> References: <20230614192911.16448-1-michael.reed@canonical.com> MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Michael Reed UBUNTU: [Config] Intel Sapphire Rapids HBM support needs CONFIG_NUMA_EMU BugLink: https://bugs.launchpad.net/bugs/2008745 Currently Ubuntu kernel has this kernel config disabled. But in some cases, Intel's Sapphire Rapids High Bandwith Memory (SPR-HBM) needs this option. Memory bandwidth has been a bottleneck of increasingly memory bound workloads. Sapphire Rapids plus HBM is specifically targeted to cater to these workloads, traditionally served using overprovisioning of memory devices. Signed-off-by: Michael Reed --- debian.master/config/annotations | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/debian.master/config/annotations b/debian.master/config/annotations index 4ec75d62e3ec..7b27536b0b20 100644 --- a/debian.master/config/annotations +++ b/debian.master/config/annotations @@ -432,7 +432,7 @@ CONFIG_NUMA note<'LP:1543165 LP:1557690'> CONFIG_NUMA_BALANCING_DEFAULT_ENABLED policy<{'amd64': 'y', 'arm64': 'y', 'ppc64el': 'y', 's390x': 'n'}> CONFIG_NUMA_BALANCING_DEFAULT_ENABLED note<'LP:1557690'> -CONFIG_NUMA_EMU policy<{'amd64': 'n'}> +CONFIG_NUMA_EMU policy<{'amd64': 'y'}> CONFIG_NUMA_EMU note<'LP:1864198'> CONFIG_NVMEM policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'ppc64el': 'y', 's390x': 'n'}>