From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x226/FSNPZiXUD967DfPb57I3TC2c6SPSqIbknkdiMAM/QnEr08Fbeloh2RJvw6hOR3P+D9fr ARC-Seal: i=1; a=rsa-sha256; t=1516990349; cv=none; d=google.com; s=arc-20160816; b=bqxEc2U+MO/gMpTIjjDDhmLDarnBkGBAeapACDTZc7+fUeHLCG85dDlVYxstzvZgr1 jybnSehm4+Y0rN9Nms4RHTtSIDkTgcFG+TL/7z8CZDEtiquYpulusRhkOphXyQwlAGdP kod6GFAzr/HsGV69FYI1Uv/R0LexObNh8eSWYUexHzGY0yY3bICMIy83czeRfC0wVblp /6Y23V4BbXu7/h4i7NZihcizHgtwNTM9Ac7YxWJVNAEbkdvunna3mo1KnErOou54k+vg Pwr00KqC/nsCVwh26uQvqDsmGNZTXtRRWjvZ0G2GyCMTsFoQsIv/idngJDtduBZ0istS mjjQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=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=oLZ9rmrS32WP8dpeDg+VY/SO/izflilDah5U3BEpQWrewxrvMeo92HOIIIaEQjHTql c+kLq3UbqksKjjFxrVU3i+k/mY8j0KPgNUOuiINbqaxIMJnAIFoROltWmFHgiAQ92hs2 796ZXl/iHB/MPcpBtZb2lBsJM8bPIkkNSe4mLglED/bD7y6oseFz/vNhadsreqrEAAhu Th7+jAeciR3SLB/AuHMRbt8nP/fdSaLx53ByKEt6JPJHfQits4NXxSBCxDHfRycyX0RF zKjiXAi5napf8u/TDINMvSmos9SvnI1rcb4FXKexNCMBFTCwMesFCoB4uXpjjc8tKL8f AYsg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of arjan@linux.intel.com designates 134.134.136.20 as permitted sender) smtp.mailfrom=arjan@linux.intel.com Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of arjan@linux.intel.com designates 134.134.136.20 as permitted sender) smtp.mailfrom=arjan@linux.intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,417,1511856000"; d="scan'208";a="29743303" 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 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1590140582166248265?= X-GMAIL-MSGID: =?utf-8?q?1590679672684094059?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 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?