From patchwork Thu Oct 15 11:52:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 302835 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=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SPF_HELO_NONE, SPF_PASS autolearn=ham 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 08A1CC433DF for ; Thu, 15 Oct 2020 11:54:37 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 5B978212CC for ; Thu, 15 Oct 2020 11:54:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="FjBGCl0h" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5B978212CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:51998 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kT1q6-0003KQ-Vh for qemu-devel@archiver.kernel.org; Thu, 15 Oct 2020 07:54:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53974) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kT1os-0002Un-Nx for qemu-devel@nongnu.org; Thu, 15 Oct 2020 07:53:18 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:34365) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kT1oq-0003Ft-7h for qemu-devel@nongnu.org; Thu, 15 Oct 2020 07:53:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602762795; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=N5lf+J2uL2GS3e7EmSXEr5Azz4KQGd++g6WvS13cyDU=; b=FjBGCl0hvyYoWRstAh+pg93skr/kCzAVanFVbE275nVHJ9jYWgwXpg9MObFuZSVJ2Uies0 YyIKjiwY3g4hxJ5Rnj0D5TvZYiRPb+dMbbq9V/+U5uz+tFfUNY6AGd19zN0uZBWVe96FbL oK0Vu0gg9dRvMPGVl0/h0m1E7nTPtJg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-447--aKgZj66Mt6xksAvhm4NBQ-1; Thu, 15 Oct 2020 07:53:13 -0400 X-MC-Unique: -aKgZj66Mt6xksAvhm4NBQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0AAD364095; Thu, 15 Oct 2020 11:53:12 +0000 (UTC) Received: from laptop.redhat.com (ovpn-113-210.ams2.redhat.com [10.36.113.210]) by smtp.corp.redhat.com (Postfix) with ESMTP id A69486EF51; Thu, 15 Oct 2020 11:52:55 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, stefanha@redhat.com, fam@euphon.net, philmd@redhat.com, alex.williamson@redhat.com Subject: [RFC 0/5] NVMe passthrough: Support 64kB page host Date: Thu, 15 Oct 2020 13:52:47 +0200 Message-Id: <20201015115252.15582-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/15 02:38:26 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, mreitz@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This series allows NVMe passthrough on aarch64 with 64kB page host. Addresses and sizes of buffers which are VFIO DMA mapped are aligned with the host page size. nvme_register_buf() path is taken care of in this series but it does not seem to prevent the use case from working. Best Regards Eric This series can be found at: https://github.com/eauger/qemu/tree/nvme_64k_rfc This was tested on ARM only. Eric Auger (5): block/nvme: use some NVME_CAP_* macros block/nvme: Change size and alignment of IDENTIFY response buffer block/nvme: Change size and alignment of queue block/nvme: Change size and alignment of prp_list_pages block/nvme: Align iov's va and size on host page size block/nvme.c | 43 +++++++++++++++++++++++-------------------- 1 file changed, 23 insertions(+), 20 deletions(-)