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=-2.2 required=3.0 tests=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 8DADCC433DF for ; Tue, 7 Jul 2020 21:30:50 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 63CD8206BE for ; Tue, 7 Jul 2020 21:30:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 63CD8206BE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 26FB488263; Tue, 7 Jul 2020 21:30:50 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ikoEbM3HSARx; Tue, 7 Jul 2020 21:30:49 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 9D59188185; Tue, 7 Jul 2020 21:30:49 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8BB1DC07FF; Tue, 7 Jul 2020 21:30:49 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 96F65C016F for ; Tue, 7 Jul 2020 21:30:47 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 7D67F88263 for ; Tue, 7 Jul 2020 21:30:47 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id E1hiYSpGn4UA for ; Tue, 7 Jul 2020 21:30:47 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by hemlock.osuosl.org (Postfix) with ESMTPS id ED93D88185 for ; Tue, 7 Jul 2020 21:30:46 +0000 (UTC) IronPort-SDR: 1kmV0xi6EaqXlWDbZSPXgH5PzlY5izrBn8lEekhuRkpcCFXyvXgVoATqw2FRt0a0DBjqQ+2Gn8 g/CPzf7YoN1w== X-IronPort-AV: E=McAfee;i="6000,8403,9675"; a="232561018" X-IronPort-AV: E=Sophos;i="5.75,325,1589266800"; d="scan'208";a="232561018" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jul 2020 14:30:46 -0700 IronPort-SDR: rwm7lj+DnvL/a1nGsfKY1/7jBpW0zpUQ2Umk8tCEBzRExI+Yqm+0qUJZpUU7FPxDpBzDyT16+x cJ0EuuDG1dxA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,325,1589266800"; d="scan'208";a="297521531" Received: from romley-ivt3.sc.intel.com ([172.25.110.60]) by orsmga002.jf.intel.com with ESMTP; 07 Jul 2020 14:30:44 -0700 Date: Tue, 7 Jul 2020 14:30:44 -0700 From: Fenghua Yu To: Thomas Gleixner , Joerg Roedel , Ingo Molnar , Borislav Petkov , Peter Zijlstra , H Peter Anvin , David Woodhouse , Lu Baolu , Felix Kuehling , Dave Hansen , Tony Luck , Jean-Philippe Brucker , Christoph Hellwig , Ashok Raj , Jacob Jun Pan , Dave Jiang , Sohil Mehta , Ravi V Shankar Subject: Re: [PATCH v5 00/12] x86: tag application address space for devices Message-ID: <20200707213043.GG32961@romley-ivt3.sc.intel.com> References: <1593560682-40814-1-git-send-email-fenghua.yu@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1593560682-40814-1-git-send-email-fenghua.yu@intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Cc: iommu@lists.linux-foundation.org, x86 , linux-kernel , amd-gfx X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Hi, Thomas, Joerg, Boris, Ingo, Baolu, and x86/iommu maintainers, On Tue, Jun 30, 2020 at 04:44:30PM -0700, Fenghua Yu wrote: > Typical hardware devices require a driver stack to translate application > buffers to hardware addresses, and a kernel-user transition to notify the > hardware of new work. What if both the translation and transition overhead > could be eliminated? This is what Shared Virtual Address (SVA) and ENQCMD > enabled hardware like Data Streaming Accelerator (DSA) aims to achieve. > Applications map portals in their local-address-space and directly submit > work to them using a new instruction. > Any comment on this series? Updated patch 1 with minor changes was sent out on the same patch 1 thread and was Acked-by Felix Kuehling. If you want me to send the whole series with the minor changes or any other changes, please let me know. Any plan to push the patches into your tree and upstream? Thanks. -Fenghua _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu