From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-x42a.google.com (mail-pf1-x42a.google.com [IPv6:2607:f8b0:4864:20::42a]) by sourceware.org (Postfix) with ESMTPS id B38273858C29 for ; Mon, 5 Feb 2024 19:02:11 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org B38273858C29 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org B38273858C29 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2607:f8b0:4864:20::42a ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1707159733; cv=none; b=T3Mbw67P0lrCjRCpHWicGws7CkB0ea/zVVCKdySzjQz7fSYQRbe4l5UmK8dR7x8tQdgeWhDBNMV32lVwV20GTxlIet3Jb+KE6E2nnomfzcYd2HHIFHIRC4U76uEiHEzdfVkhXixX0ZFc4IgTfTjgRk4sCePW5VXm+4YFKFSOYeM= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1707159733; c=relaxed/simple; bh=ob7kwnDMQ8e3UmSIqlPO/WRdDiOA8KFhgsm+2BwSp+0=; h=DKIM-Signature:From:To:Subject:Date:Message-Id:MIME-Version; b=GEgc0FSR5LVK6SaULGZ7q8hFHS1Fw8KhVif3fGT0rwQ86y+AMnBL7FCy/PG01uSF1M282JYn7SZSnSw1tYiCPW8SadBb3TC1nTC1dUGthzZzBYRFRWYaykQeEr5hGU0AUJKM419DtqOQHXKquRFsGTQrmEva8jPrwulV+LtamRY= ARC-Authentication-Results: i=1; server2.sourceware.org Received: by mail-pf1-x42a.google.com with SMTP id d2e1a72fcca58-6e03af57c97so731893b3a.3 for ; Mon, 05 Feb 2024 11:02:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1707159731; x=1707764531; darn=sourceware.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Sp7rdgj4Yh4ZNeVBlaWUsMJ2yTGjfdVE1Fp35bFWNHI=; b=foSP3seKUeMTqM8tADZmGTwv4g2BSv3xNFWQ4Of6WCfC8nTKICaBgFQgCpZ5PKURwj 6ybtGqjEHlrsflK+qhQQO49oNYtxllw3hSQBuPam2CkWFioaG65LsdtsOaZ8LMgvsJms 0yIsgPOgueESfRT1Pd+/dv4mdqtomy5FVLMeNOMSKC5Mur2abLfDYm4vWgmaXv8g2m3N zes7oobLzM7fgnOLSy5W7qLRr4LBwHauVKnEsiohGczli9rm4RVHv674BFWR/tSyITAk K1L3r/pFnel8nsOqU0c9q1R85CtFaLYqVITbOp7cxu+IlyUvgqk2S7wtS3eWV0OT6IAG mRTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707159731; x=1707764531; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Sp7rdgj4Yh4ZNeVBlaWUsMJ2yTGjfdVE1Fp35bFWNHI=; b=qJuvQNf12ZEpZBp16TTiHKpBNuzcp/NQEMVYJF3+sT427htYbxdm0Dv1saQO2QSZov bHBJAdRqqjbmd3gdaRas3WXZlp4G6yS2ydHOGHFJiqoDZOcmTOXhSOQ2loBmPfnP2s/r ZFXxLxkkkcYey5g+8+nZ5rThbjrC7cq2a6Nzmgb1+uWrZOMf73CjI1S/JNnd9gjUlNXR /jknBAc4ehQKme81DI/5htvPatEILQI8MTPh63vAt3YwB1WcMnGYI1an9auPdN8jVQIo tY0Tc6B0pBXHWFi15g6zNQbJuLoyuZEXzjYvAkXWCnBK9J5KpKjiQEAoKO6P035DVuVH 1NJg== X-Gm-Message-State: AOJu0YxBX149IAlt4FRkCYEMdbAL5zdgoGLmaJ93EPjzhqUo4+MkQKGY xVQj9fVE4BbAjnoD2NxVygp7mTxWwOrdpsBum5zzFgapXoQESSqz X-Google-Smtp-Source: AGHT+IHMhLAa2b9eYoztybv/Ykxqy02M/AxfTNURhs5e3F+Q14xyI+NraCFpAn22AeNkN5FW/Mpbqg== X-Received: by 2002:a05:6a00:2d1d:b0:6dd:84ce:4602 with SMTP id fa29-20020a056a002d1d00b006dd84ce4602mr60362pfb.6.1707159730619; Mon, 05 Feb 2024 11:02:10 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCX7y14yPc8fbSsVAsHlyrsQhI6L3ZAFJ1uXJFhc2OkMMQwWQvmnZh2rFUX9SPw5n91eKRYJnFKi3Faz1XvthGSSH7P6bvi9pQysbZ4iXGlqlIgYO6KSk2Ay+lq4kzJC7dOGyO9Fh4B6c2KO7cq9OX9uO6uCDLpkA96SfSurz3NAfJxAE2Ohh9gbBcvyJ6hrBbTE06m2nL+jT00yg3jLqgXCYcBxWJ2G3T6jNCWBugGAtXqggSG/3uo= Received: from lib-genoa-01.amd.com ([165.204.156.251]) by smtp.gmail.com with ESMTPSA id t8-20020a056a00138800b006e040d4d251sm188621pfg.155.2024.02.05.11.02.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Feb 2024 11:02:09 -0800 (PST) From: Sajan Karumanchi X-Google-Original-From: Sajan Karumanchi To: adhemerval.zanella@linaro.org Cc: bmerry@sarao.ac.za, goldstein.w.n@gmail.com, hjl.tools@gmail.com, libc-alpha@sourceware.org, pmallapp@amd.com, sajan.karumanchi@amd.com, fweimer@redhat.com Subject: RE: [PATCH 0/4] x86: Improve ERMS usage on Zen3+ Date: Mon, 5 Feb 2024 19:01:08 +0000 Message-Id: <20240205190108.2332109-1-sajan.karumanchi@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-6.2 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Adhemerval, In our extensive testing, we observed mixed results for rep-movs/stos performance with the ERMS feature enabled. Henceforth, we approve this patch to avoid the ERMS code path on AMD processors for better performance. -Sajan