Received: by 10.213.65.68 with SMTP id h4csp1342494imn; Wed, 14 Mar 2018 18:04:49 -0700 (PDT) X-Google-Smtp-Source: AG47ELvIUU1j3/4lHpTsuV3d76rLOzwBBdUIPxcDN5ahxF0M1A0aPUIHpFMFIvX8fbylNU/JJ8ym X-Received: by 10.98.67.216 with SMTP id l85mr6066828pfi.214.1521075889796; Wed, 14 Mar 2018 18:04:49 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1521075889; cv=none; d=google.com; s=arc-20160816; b=DlmWTPQgpZ2vVu3PPu9FsQAFO25K6XhoDeOMzR31d3PAOtAh6YfJk46xkTZFBTjwBU VM3/+0Grr+6jRMH9PyJOeCZOMgf+vyQwygn1eeA1x0JZAqbsSGiM6x0mF2aaOpoNUbNu I4xRStviXq3zWDYftMSDZAH54idMlf+2chHsnRKvunH4blq1I9ocvoYW28wUYk07MTGF XYtlAyw9DYBijixrcQZyCKwKT48UVjWMvMBQbyeFBFoi043Uvm0UnVvH7igkxU973xyI y0ZQT4dCa5jev6kH2PcmixHTzZbtIXH3tXNJaaDU1Nf7lAU8N8S5gM0HqsXVTu31NCg2 dRBQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:arc-authentication-results; bh=FXC3aKye5yWb3j8/AfgtlHSK77bF+Ej09t1jtaj6q/k=; b=a6DvINX+RYRNT7aA9RIZKvZ5Rie7x5fwgSPUx8V6iTw3rvSkXDK69sjdb7z7ZXTGyL ZzoYnJBQe0vEoa2jQpOj3lEv8kvBF3nok1S9P+yPHtgefFdZHF0zFkn3hk6y2uNVqRkF QKmlrOWCbWLFLmtEWLg3I5DBnkembIQGMWVbEEoe5WB2IY8FzwMbCp2wLytlLfLnao+T /bDIe3qZA1fUGxw8y8RkS4CORgjtKWvIJ1XisAra6eEi02p64RnG17hF7qFdlMKY6WQO dw9TDk8QnmRsufhEfbpqZxkKPPJS5QaH8AtgOpKsDA3u3a8wiLZ3ByRQWGFvyX7H+NG9 3CyQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id c19-v6si2870369plo.652.2018.03.14.18.04.34; Wed, 14 Mar 2018 18:04:49 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752084AbeCOBCf (ORCPT + 99 others); Wed, 14 Mar 2018 21:02:35 -0400 Received: from mail.skyhub.de ([5.9.137.197]:35298 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751943AbeCOBCd (ORCPT ); Wed, 14 Mar 2018 21:02:33 -0400 X-Virus-Scanned: Nedap ESD1 at mail.skyhub.de Received: from mail.skyhub.de ([127.0.0.1]) by localhost (blast.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id EWJ-cBZVvP83; Thu, 15 Mar 2018 02:02:17 +0100 (CET) Received: from pd.tnic (p200300EC2BC98E000DB0D181F40EDD09.dip0.t-ipconnect.de [IPv6:2003:ec:2bc9:8e00:db0:d181:f40e:dd09]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 064B21EC05DE; Thu, 15 Mar 2018 02:02:12 +0100 (CET) Date: Thu, 15 Mar 2018 02:01:52 +0100 From: Borislav Petkov To: Henrique de Moraes Holschuh Cc: X86 ML , Emanuel Czirai , Ashok Raj , Tom Lendacky , LKML Subject: Re: [PATCH 2/2] x86/microcode: Fix CPU synchronization routine Message-ID: <20180315010152.GE11061@pd.tnic> References: <20180314183615.17629-1-bp@alien8.de> <20180314183615.17629-2-bp@alien8.de> <20180315010014.xsedkarzrgqiunxf@khazad-dum.debian.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20180315010014.xsedkarzrgqiunxf@khazad-dum.debian.net> User-Agent: Mutt/1.9.3 (2018-01-21) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 14, 2018 at 10:00:14PM -0300, Henrique de Moraes Holschuh wrote: > Intel takes anything from twenty thousand cycles to several *million* > cycles per core, proportional to microcode update size. Got any hard data to back that claim up? -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.