From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D8E19C282EC for ; Fri, 14 Mar 2025 18:38:12 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4ZDtR720bwz3cB5; Sat, 15 Mar 2025 05:38:11 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2604:1380:4641:c500::1" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1741977491; cv=none; b=T7QEN2BR/euE4N5bGm0fjdNUOePB54j3cDxX0QKJdc+mcTrizjRLQW2CDK4VwJtb2MVgK0fwafeWz0kx18xhTEgJnfcDrPG5o6oKxPUVMWvRwEc8qdMXes20Gjui9q5KzA234Pyy5xGCXU3nag9hljMITZOwNWnRCTs2PE8lp/UM8O1XUxb5AwtJiyUXel22BCOs+cWEk6lOx/aqFTFsr+Gh/CgIit+PTaaWd1sVg60C0yUGLnOvweL2+FDOjx3sGMgVQHetRVNkMRqVXpyndpv7v1phMqRJp0ALpPLBzWeRkcKLNPAU7XsoGduq21PGSMxSa+ejVAafPHY99j6GFg== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1741977491; c=relaxed/relaxed; bh=MjzUYO+f0dEIfn0NqOku+3fnvEFXy2J1drD8gdq2Qzg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=XKAkqiZDgzwcWuYEEA5dRed/NABE1vzIOY82acPWt4oLFgFopnkyXgoouFqFEpgynoSnIKMJHG67ewLQ3J2zEkll/tuv/BOpy05JBS8S7PTGDr/QdRiHMQHwppoivBVfaE9lyNzWOFCxp15F3pjAtJpFSRY/4A04r2+v6HrLVyZ8smY457a0GScDOALR2NGk6a4uN/PzN/XL1mNPE5UFDxAfm7/woXX8B7+kJerWToI2XZPBXQcECP1/Hktuy41Q0GIpTurWm1MrSV2VE9Njx4brI9FT8VKEI3yKDVwKdc3SCT9su3aGEw/wPn6FO719q/J3+icKyaSnamTmUiVWtQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=fail (p=none dis=none) header.from=arm.com; spf=pass (client-ip=2604:1380:4641:c500::1; helo=dfw.source.kernel.org; envelope-from=cmarinas@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2604:1380:4641:c500::1; helo=dfw.source.kernel.org; envelope-from=cmarinas@kernel.org; receiver=lists.ozlabs.org) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4ZDtR60MJ0z3bsM for ; Sat, 15 Mar 2025 05:38:09 +1100 (AEDT) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 555155C4C5C; Fri, 14 Mar 2025 18:35:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6A66AC4CEE3; Fri, 14 Mar 2025 18:38:02 +0000 (UTC) From: Catalin Marinas To: will@kernel.org, sudeep.holla@arm.com, tglx@linutronix.de, peterz@infradead.org, mpe@ellerman.id.au, linux-arm-kernel@lists.infradead.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, pierre.gondois@arm.com, dietmar.eggemann@arm.com, Yicong Yang Cc: linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-kernel@vger.kernel.org, morten.rasmussen@arm.com, msuchanek@suse.de, gregkh@linuxfoundation.org, rafael@kernel.org, jonathan.cameron@huawei.com, prime.zeng@hisilicon.com, linuxarm@huawei.com, yangyicong@hisilicon.com, xuwei5@huawei.com, guohanjun@huawei.com, sshegde@linux.ibm.com Subject: Re: [PATCH v12 0/4] Support SMT control on arm64 Date: Fri, 14 Mar 2025 18:37:59 +0000 Message-Id: <174197746840.735682.9575626401918508908.b4-ty@arm.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250311075143.61078-1-yangyicong@huawei.com> References: <20250311075143.61078-1-yangyicong@huawei.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit On Tue, 11 Mar 2025 15:51:39 +0800, Yicong Yang wrote: > The core CPU control framework supports runtime SMT control which > is not yet supported on arm64. Besides the general vulnerabilities > concerns we want this runtime control on our arm64 server for: > > - better single CPU performance in some cases > - saving overall power consumption > > [...] Applied to arm64 (for-next/smt-control), thanks! [1/4] cpu/SMT: Provide a default topology_is_primary_thread() https://git.kernel.org/arm64/c/4b455f59945a [2/4] arch_topology: Support SMT control for OF based system https://git.kernel.org/arm64/c/5deb9c789ae4 [3/4] arm64: topology: Support SMT control on ACPI based system https://git.kernel.org/arm64/c/e6b18ebfaf63 [4/4] arm64: Kconfig: Enable HOTPLUG_SMT https://git.kernel.org/arm64/c/eed4583bcf9a -- Catalin