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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B1D6C433F5 for ; Fri, 3 Dec 2021 00:46:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350124AbhLCAtb (ORCPT ); Thu, 2 Dec 2021 19:49:31 -0500 Received: from out2-smtp.messagingengine.com ([66.111.4.26]:42089 "EHLO out2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238220AbhLCAt3 (ORCPT ); Thu, 2 Dec 2021 19:49:29 -0500 Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id 9A4785C011D; Thu, 2 Dec 2021 19:46:06 -0500 (EST) Received: from imap44 ([10.202.2.94]) by compute5.internal (MEProxy); Thu, 02 Dec 2021 19:46:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flygoat.com; h= mime-version:message-id:in-reply-to:references:date:from:to:cc :subject:content-type:content-transfer-encoding; s=fm3; bh=YPHKg 0tcsMsw3+/5ECgto/EzakVJuVTXtf6xXT7Vbt8=; b=svMqKrdL/FUSUrgKnz185 gK6lGzuNro4jnW0LRsj9j21qMmoQjMUpvGHL6pMn9/SgXHn2DM1qhJZlc6LkgLzd rRNy2XvAL3v0J/g32KJPqZ8yPqzvHJyyO9gAvuegLrYMPYbTMVIi+/D+4oAxHNQH F+ljILY3ep/0ZEkviqteQYZqRTFtCp3euUGDPXpT+P27gyXh4xkyfvRaSnI6o2vN df6SwuPz7lGKwCSPlrKx4y8xDwXVaVRQYWbKtpuiCNBfrertlcfog4uslfi+d8Hb 4ZpWtD0RXJpdPeJn+YKb1kQ+f3Ix90DEUDrF8XD9HWQ2Eks+n+VqxZ+6ErUwx4TR Q== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; bh=YPHKg0tcsMsw3+/5ECgto/EzakVJuVTXtf6xXT7Vb t8=; b=Rfh39d71O7lIlShNLzYv37FLklibG72T1XBUDysw0J982SPhYLbntXt0j pVJc6lJMTCHrIpc5vlhS2RhPcPGGFNw+n9AEWG+EE2TqwuY2KXNMpDxVOun3B9H+ YzgX3LvQKhpT+UwtF1nXjPdTz5ww7PBhvbdhk4eGiw/H15idAO+j15kjdI9YPOFi 9anjz60+lAtqiU8R8p+H48ABk0eLS1qfsXEUOu0Z1gbnpwXDEHVAXCyMuV2PabqY tayltJgKf1D1aR/hnj5weRAN2oPJvK/jXN1G8sQ0mP8jMEOWfXQCi1iVzYQgltQl eVxXYNvR1v2jfac8LtvjCMxOwxS9w== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvuddrieeigddvhecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefofgggkfgjfhffhffvufgtgfesthhqredtreerjeenucfhrhhomhepfdflihgr gihunhcujggrnhhgfdcuoehjihgrgihunhdrhigrnhhgsehflhihghhorghtrdgtohhmqe enucggtffrrghtthgvrhhnpeefteegkeevfeethffgudehgedvueduvdeifedvvdelhfef heekteefueektdefjeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrih hlfhhrohhmpehjihgrgihunhdrhigrnhhgsehflhihghhorghtrdgtohhm X-ME-Proxy: Received: by mailuser.nyi.internal (Postfix, from userid 501) id 6E6CCFA0AA6; Thu, 2 Dec 2021 19:46:06 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.5.0-alpha0-4458-g51a91c06b2-fm-20211130.004-g51a91c06 Mime-Version: 1.0 Message-Id: <27b6387f-fa93-484e-a56e-12452a82f069@www.fastmail.com> In-Reply-To: <822ced92-f165-3c5a-e0bf-dafa6f808b76@intel.com> References: <20211203003636.11417-1-jiaxun.yang@flygoat.com> <822ced92-f165-3c5a-e0bf-dafa6f808b76@intel.com> Date: Fri, 03 Dec 2021 00:45:44 +0000 From: "Jiaxun Yang" To: "Dave Hansen" , x86@kernel.org Cc: "Thomas Gleixner" , "Ingo Molnar" , bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, chang.seok.bae@intel.com, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 00/10] x86: Allocate AVX512 xstate ondemand Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org =E5=9C=A82021=E5=B9=B412=E6=9C=883=E6=97=A5=E5=8D=81=E4=BA=8C=E6=9C=88 =E4= =B8=8A=E5=8D=8812:40=EF=BC=8CDave Hansen=E5=86=99=E9=81=93=EF=BC=9A > On 12/2/21 4:36 PM, Jiaxun Yang wrote: >> Also we are going to have heterogeneous processors that >> only some cores support AVX512, it can be helpful when >> dealing with such processors. > > Really? Which x86 vendor is doing that? Clear lower two bits of MSR 0xAF on Alder Lake give me some suprise :-) --=20 - Jiaxun