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 X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E92ADC432C3 for ; Fri, 15 Nov 2019 14:31:41 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AAF4D2072D for ; Fri, 15 Nov 2019 14:31:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="fLdav0zx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AAF4D2072D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 295F16B0008; Fri, 15 Nov 2019 09:31:41 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 247176B000A; Fri, 15 Nov 2019 09:31:41 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 135896B000D; Fri, 15 Nov 2019 09:31:41 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0079.hostedemail.com [216.40.44.79]) by kanga.kvack.org (Postfix) with ESMTP id F3BA66B0008 for ; Fri, 15 Nov 2019 09:31:40 -0500 (EST) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id CE7B282499B9 for ; Fri, 15 Nov 2019 14:31:40 +0000 (UTC) X-FDA: 76158750360.06.nest87_2bab975b2ce48 X-HE-Tag: nest87_2bab975b2ce48 X-Filterd-Recvd-Size: 3794 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Fri, 15 Nov 2019 14:31:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=lFf6dMuZ+Z677Mu+atmNfBMTjTNBdV46hR58S1n03Bw=; b=fLdav0zx2sYSW0v3s7tI6JqhI i7d9/vr4rYSEvqt/p7lCLO5nk4FjdEP/waWiqJFTEs4e7A3brAzpOhscHMxVCEEHx8WDQaY2fd8Gr GK3TZyjntH4NZYVDHPPKRUN+AsgdOJw2Cm2ZA2fsSg2yhR1F8LWGZb3c8HNAHerseKwJPUt366auU yXVDObbWRAX2R2xTnSjp74xVKH4/hcGL9VqcxEzgIIACyD2Q8xu6GqD9a9uiaEDpt8LXrHH8EkZVT 0q5wDIWmPdE6CFeLG/2Xak2uIEe2UlAm65b4AUoKrm1vQ3tMwtkUeiJT21GYinhobMjPfO3WOy2ow IjCWf0kTQ==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1iVcd2-0000Es-S4; Fri, 15 Nov 2019 14:31:17 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 2EA5D304637; Fri, 15 Nov 2019 15:30:06 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 52A882B12E7AC; Fri, 15 Nov 2019 15:31:14 +0100 (CET) Date: Fri, 15 Nov 2019 15:31:14 +0100 From: Peter Zijlstra To: Tom Lendacky Cc: "Kirill A. Shutemov" , Dan Williams , Mike Rapoport , Linux Kernel Mailing List , Alexey Dobriyan , Andrew Morton , Andy Lutomirski , Arnd Bergmann , Borislav Petkov , Dave Hansen , James Bottomley , Steven Rostedt , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Linux API , linux-mm , the arch/x86 maintainers , Mike Rapoport Subject: Re: AMD TLB errata, (Was: [PATCH RFC] mm: add MAP_EXCLUSIVE to create exclusive user mappings) Message-ID: <20191115143114.GN4131@hirez.programming.kicks-ass.net> References: <1572171452-7958-2-git-send-email-rppt@kernel.org> <20191028123124.ogkk5ogjlamvwc2s@box> <20191028130018.GA7192@rapoport-lnx> <20191028131623.zwuwguhm4v4s5imh@box> <20191029064318.s4n4gidlfjun3d47@box> <20191029085602.GI4114@hirez.programming.kicks-ass.net> <20191029110024.yjytp22lhd2vekrv@box> <20191029123949.GL4114@hirez.programming.kicks-ass.net> <1da1b025-cabc-6f04-bde5-e50830d1ecf0@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1da1b025-cabc-6f04-bde5-e50830d1ecf0@amd.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Nov 15, 2019 at 08:12:52AM -0600, Tom Lendacky wrote: > I talked with some of the hardware folks and if you maintain the same bits > in the large and small pages (aside from the large page bit) until the > flush, then the errata should not occur. Excellent! Thanks for digging that out Tom.