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 35FC9C433E0 for ; Tue, 7 Jul 2020 21:53:51 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 0BE9C20663 for ; Tue, 7 Jul 2020 21:53:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0BE9C20663 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=amd-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C048A6E0A1; Tue, 7 Jul 2020 21:53:50 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id D1BFB6E15D for ; Tue, 7 Jul 2020 21:30:46 +0000 (UTC) IronPort-SDR: wWlKabf2mixuXtZSxgm35AL3VOByHjP7fq4H+cvjOrS+h3+xTEXofVurl96GAYcpd1hbstJ9AJ vJTjoIOrnngQ== X-IronPort-AV: E=McAfee;i="6000,8403,9675"; a="127294823" X-IronPort-AV: E=Sophos;i="5.75,325,1589266800"; d="scan'208";a="127294823" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jul 2020 14:30:47 -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) X-Mailman-Approved-At: Tue, 07 Jul 2020 21:53:49 +0000 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: iommu@lists.linux-foundation.org, x86 , linux-kernel , amd-gfx Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" 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 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx