Received: by 10.223.176.46 with SMTP id f43csp1005040wra; Fri, 26 Jan 2018 10:13:14 -0800 (PST) X-Google-Smtp-Source: AH8x225yWU6iO3M+5rp79iAtLzvPHUjlJNSG9TzBxsP1uK5jW9WQj1R0yP48CWNoQ4zbh42eMM6C X-Received: by 10.99.113.16 with SMTP id m16mr11724320pgc.29.1516990394819; Fri, 26 Jan 2018 10:13:14 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1516990394; cv=none; d=google.com; s=arc-20160816; b=OdjTqDFYO2XXyyzGh/NX5NNhL4FDjXFneyNxVzLn6N/yLK37I2sG0iHClhb9k+EP3w QkDOsdCDpEAkbUBNUdvNEuOnPeVcUPbVvzL1KDt+o/kpWW1n6AmVtJeBqYmYTue5rbS0 Dh/LRZG28k90S/M6rnbZdFW+PIBEbFRNu6+rLpsDjsEhA/7a79HP0Ktn8BrF4AqOUg6z cXG6zu+VeUtn1GikgCAC/gUpcFgMDeSXovzxkCiR83Fv8f3rua4wvY+pkBPtBMVl25fS px+cgOHwUe+R9zFL9imZLiom11fu2FBmiwKpJCfUWTy0NOFysSRmzwGaP2C8nP9ak4iq KgNA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject:arc-authentication-results; bh=ChUzxTQQC7Bpu57a62vOZYSa4gUqsMJSM5qvOYA0PIY=; b=Egk3plYJBRac5xbzaQezBRtTgePo8GlDeO4FhnDi8sMvrtU3pHALI8uyeFo06fMYxd OVlyGGdCgQIbyZuOUZr5XFZqTGW5MKO/u+lUkvRJA0EZ683OMBkKlryo/AG9hG1ZWazU AmU03hGit2uUe+kH/Gp8WKbmQDZqB6r6acGV+X2uj17R6mtKwj9SAJB1XKFw4rhojdzD IEZxalQduIqstPPbdDiST3BQ64RdvazL29Ho1qq7TFp0QuJ9o4nx5DUW1LdUw/XDgiCx slE4uV2Pq3vSVYUzNho+IReUxQLfuOaa6KrdE/t2ecbNkWiAjylmBTS3H+yrygMssjoV jcRQ== 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 e7-v6si4026442plk.625.2018.01.26.10.13.00; Fri, 26 Jan 2018 10:13:14 -0800 (PST) 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 S1752035AbeAZSMb (ORCPT + 99 others); Fri, 26 Jan 2018 13:12:31 -0500 Received: from mga07.intel.com ([134.134.136.100]:30189 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751474AbeAZSM3 (ORCPT ); Fri, 26 Jan 2018 13:12:29 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jan 2018 10:12:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,417,1511856000"; d="scan'208";a="29743303" Received: from avandeve-mobl.amr.corp.intel.com (HELO [10.24.10.41]) ([10.24.10.41]) by orsmga002.jf.intel.com with ESMTP; 26 Jan 2018 10:12:28 -0800 Subject: Re: [RFC 09/10] x86/enter: Create macros to restrict/unrestrict Indirect Branch Speculation To: David Woodhouse , Andi Kleen , Linus Torvalds Cc: Dave Hansen , Liran Alon , Laura Abbott , Andrew Lutomirski , Janakarajan Natarajan , Borislav Petkov , "Mallick, Asit K" , =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= , KarimAllah Ahmed , Peter Anvin , Jun Nakajima , Ingo Molnar , the arch/x86 maintainers , Ashok Raj , "Van De Ven, Arjan" , Tim Chen , Paolo Bonzini , Linux Kernel Mailing List , Peter Zijlstra , Thomas Gleixner , Greg Kroah-Hartman , Masami Hiramatsu , Tom Lendacky , Dan Williams , Joerg Roedel , Andrea Arcangeli , KVM list References: <7c0b0879-3448-43e4-8380-4708fc787113@default> <50c5d627-8975-184b-b50f-4cc02c5816c5@intel.com> <1516957886.30244.161.camel@infradead.org> <20180126175901.GL26209@tassilo.jf.intel.com> <1516990288.30244.253.camel@infradead.org> From: Arjan van de Ven Message-ID: <07daf763-cd29-5d1c-1488-1fcb5b440347@linux.intel.com> Date: Fri, 26 Jan 2018 10:12:28 -0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: <1516990288.30244.253.camel@infradead.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/26/2018 10:11 AM, David Woodhouse wrote: > > I am *actively* ignoring Skylake right now. This is about per-SKL > userspace even with SMEP, because we think Intel's document lies to us. if you think we lie to you then I think we're done with the conversation? Please tell us then what you deploy in AWS for your customers ? or show us research that shows we lied to you?