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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 3EC1BC433E0 for ; Mon, 29 Jun 2020 20:43:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1783820663 for ; Mon, 29 Jun 2020 20:43:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="AmBn7Z1V" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389049AbgF2Uni (ORCPT ); Mon, 29 Jun 2020 16:43:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43382 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731625AbgF2TOC (ORCPT ); Mon, 29 Jun 2020 15:14:02 -0400 Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-vi1eur04on0630.outbound.protection.outlook.com [IPv6:2a01:111:f400:fe0e::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB4AEC08EB2F for ; Sun, 28 Jun 2020 23:35:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Gzr/k4oCbcvEW7AiZGYcqOtnZAuZ87sdUvtk2U1+45np+2XqI2wkn+fFSSxJpPvBzvIfY95CTvIOq74St4++o8KZSmmblZNTye/HXpATwTRNThRGDatoR7ljUseNIFLWjftAAYrgrzzhTocZ/TiG3sCYqAeB1r2A0QBTr/A1BuQsislJYxR8T/fhQB79nJpgE5K96HOZEwU801Bn2jlsjNAYE4K+uG3LRDRjpBayLVgvveyp4ZZSzCLH0nB8khiVoZOn2Ld67ikv6ce9mfoHwXG40rdyS7MF+wCGem4kduqbS3hMeLpWkcEFDTQUvYhDSTh8Df04Ob2TLaJwJ8gtaA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jt9aKkcohM+VBBAMcQ1zSn0OzkcLoXfaQdNHqrsc8go=; b=I19SIRA9E+ml4KlImtDM2f6dT2GjHOpm/8bQAdGCULUf7DUSebu1q6C/JEQQ0ZoD5czHKgShajRH6E8quwskYdXQrzJfn+BWOHsgk/ylOAEslvjCLUXnqiYfrr31rvAWJsumKBYEoB53GLwvctI0j8ms0CZg5nttGNUPix2ZLACLyf8/jdtFuC95JbVqXotqdhbEoV0cgmf+v07H7UuHofCgk1ft3b8hZnXEyEeIUp23T10ZYTN/LgLHpL7WsN/+yuJc5e+M2O/sjq6bnvSKohrrNhgmA8xyXA7NlZAZkvgt3wCT/sr95qbheSpOaRlE434mT7ymF9kj/VMpYltmvQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jt9aKkcohM+VBBAMcQ1zSn0OzkcLoXfaQdNHqrsc8go=; b=AmBn7Z1Vgx95lJz5b3JxDQb7dpR0/wYgFEuq3Qzew0A79iEejI01TsVFHzD149IWXAhzENJq8qJnyaImapEQolKWf0QRGEawwdDBkZNk1rzw+FT+BwyKqToGmCXB7v+rtFqIIzKTJNTMt9LLg+JmWqc28jUbdUiyQym7kw7s8VU= Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) by DB7PR04MB4764.eurprd04.prod.outlook.com (2603:10a6:10:15::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3131.25; Mon, 29 Jun 2020 06:35:48 +0000 Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::2d36:b569:17c:7701]) by DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::2d36:b569:17c:7701%4]) with mapi id 15.20.3131.026; Mon, 29 Jun 2020 06:35:48 +0000 From: Peng Fan To: "Michael S. Tsirkin" CC: Stefano Stabellini , "boris.ostrovsky@oracle.com" , "jgross@suse.com" , "konrad.wilk@oracle.com" , "jasowang@redhat.com" , "x86@kernel.org" , "xen-devel@lists.xenproject.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "iommu@lists.linux-foundation.org" , "virtualization@lists.linux-foundation.org" , dl-linux-imx Subject: RE: [PATCH] xen: introduce xen_vring_use_dma Thread-Topic: [PATCH] xen: introduce xen_vring_use_dma Thread-Index: AQHWSgTusARd8c8cRkWwDit233DtZajneYoAgACU6oCAAC7QAIAAEpoAgAAGSwCAAUK2gIABcSaAgAPk6cCAADgrAIAAAH5wgAAC0YCAAABHUA== Date: Mon, 29 Jun 2020 06:35:48 +0000 Message-ID: References: <20200624050355-mutt-send-email-mst@kernel.org> <20200624163940-mutt-send-email-mst@kernel.org> <20200624181026-mutt-send-email-mst@kernel.org> <20200626110629-mutt-send-email-mst@kernel.org> <20200629022124-mutt-send-email-mst@kernel.org> <20200629023225-mutt-send-email-mst@kernel.org> In-Reply-To: <20200629023225-mutt-send-email-mst@kernel.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: redhat.com; dkim=none (message not signed) header.d=none;redhat.com; dmarc=none action=none header.from=nxp.com; x-originating-ip: [119.31.174.71] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: e07dc2d3-9155-49ce-2410-08d81bf6a91d x-ms-traffictypediagnostic: DB7PR04MB4764: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4714; x-forefront-prvs: 044968D9E1 x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: fK08amyxZaUi4JckED6/kpeUqMMw5buBVlalapbUcm+JSQK4QI84PEPgIYnkjkipS0xD9ABwB8ZcXtU/h/Y1OsDKtAVt4k4y7yMsyjn1Oa5BSHHepcIY7m4GIwnbEVNJJuthC4iVCMt+doQZU+ZAh26iGubJ/DeuGuOOXyNv4oM6PLJurQOiHffS1g7sdTacZiTsr+zppsy1C/3VBuisiyRVGG4KfeS0ux+2g8v3UsA7a2J/kgVZnBPHi2P5+10HIdKRjvpPPZ6yxmJFe43F3T3WeOuT1xkhR6Zi6ivDSCaAWVO+op7BLHTy95nrWHskMjgKfYQDmudAalEtAL7cIA== x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DB6PR0402MB2760.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(366004)(396003)(346002)(376002)(136003)(39860400002)(66946007)(8936002)(8676002)(7416002)(9686003)(83380400001)(86362001)(44832011)(26005)(64756008)(2906002)(66556008)(6916009)(4326008)(66476007)(6506007)(66446008)(186003)(76116006)(4744005)(71200400001)(5660300002)(33656002)(478600001)(55016002)(316002)(7696005)(52536014)(54906003);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: e07dc2d3-9155-49ce-2410-08d81bf6a91d X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jun 2020 06:35:48.4429 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: NmRyPfTWtT9tmgZRVPpOrkiU+mkQIwuldVriqMockyAX0T7RoLpPgZZtv1zNbSJXKaVO8ByTSQcBW7CQ4G2crw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB4764 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Subject: Re: [PATCH] xen: introduce xen_vring_use_dma >=20 > On Mon, Jun 29, 2020 at 06:25:41AM +0000, Peng Fan wrote: > > > > > > Anyway, re-reading the last messages of the original thread > > > > > > [1], it looks like Peng had a clear idea on how to fix the gene= ral issue. > > > > > > Peng, what happened with that? > > > > > > > > We shrinked the rpmsg reserved area to workaround the issue. > > > > So still use the dma apis in rpmsg. > > > > > > > > But here I am going to address domu android trusty issue using virt= io. > > > > > > My suggestion is to first of all fix DMA API so it works properly. > > > > Could you please elaborate more details? > > > > You mean the DMA API usage of rpmsg? Or xen domu dma_ops? > > > > Thanks, > > Peng. >=20 > Not 100% sure but I think xen dma ops. Sorry to ask again, could you explain more details about what issues do you see of current xen ARM domu dma_ops?=20 Or Dom0 swiotlb xen dma_ops? Thanks, Pen.g >=20 > -- > MST 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=-0.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 9377BC433E0 for ; Mon, 29 Jun 2020 06:35:55 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 5A62223130 for ; Mon, 29 Jun 2020 06:35:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="AmBn7Z1V" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5A62223130 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.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 whitealder.osuosl.org (Postfix) with ESMTP id 3CD37886C2; Mon, 29 Jun 2020 06:35:55 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Iis6AxSXblhy; Mon, 29 Jun 2020 06:35:54 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id A1EE7886B5; Mon, 29 Jun 2020 06:35:54 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 74E18C0865; Mon, 29 Jun 2020 06:35:54 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 55548C016E; Mon, 29 Jun 2020 06:35:53 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 4AF3589332; Mon, 29 Jun 2020 06:35:53 +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 Wk5dSZ7dYnbz; Mon, 29 Jun 2020 06:35:52 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-eopbgr80074.outbound.protection.outlook.com [40.107.8.74]) by hemlock.osuosl.org (Postfix) with ESMTPS id E1A8B892A4; Mon, 29 Jun 2020 06:35:51 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Gzr/k4oCbcvEW7AiZGYcqOtnZAuZ87sdUvtk2U1+45np+2XqI2wkn+fFSSxJpPvBzvIfY95CTvIOq74St4++o8KZSmmblZNTye/HXpATwTRNThRGDatoR7ljUseNIFLWjftAAYrgrzzhTocZ/TiG3sCYqAeB1r2A0QBTr/A1BuQsislJYxR8T/fhQB79nJpgE5K96HOZEwU801Bn2jlsjNAYE4K+uG3LRDRjpBayLVgvveyp4ZZSzCLH0nB8khiVoZOn2Ld67ikv6ce9mfoHwXG40rdyS7MF+wCGem4kduqbS3hMeLpWkcEFDTQUvYhDSTh8Df04Ob2TLaJwJ8gtaA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jt9aKkcohM+VBBAMcQ1zSn0OzkcLoXfaQdNHqrsc8go=; b=I19SIRA9E+ml4KlImtDM2f6dT2GjHOpm/8bQAdGCULUf7DUSebu1q6C/JEQQ0ZoD5czHKgShajRH6E8quwskYdXQrzJfn+BWOHsgk/ylOAEslvjCLUXnqiYfrr31rvAWJsumKBYEoB53GLwvctI0j8ms0CZg5nttGNUPix2ZLACLyf8/jdtFuC95JbVqXotqdhbEoV0cgmf+v07H7UuHofCgk1ft3b8hZnXEyEeIUp23T10ZYTN/LgLHpL7WsN/+yuJc5e+M2O/sjq6bnvSKohrrNhgmA8xyXA7NlZAZkvgt3wCT/sr95qbheSpOaRlE434mT7ymF9kj/VMpYltmvQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jt9aKkcohM+VBBAMcQ1zSn0OzkcLoXfaQdNHqrsc8go=; b=AmBn7Z1Vgx95lJz5b3JxDQb7dpR0/wYgFEuq3Qzew0A79iEejI01TsVFHzD149IWXAhzENJq8qJnyaImapEQolKWf0QRGEawwdDBkZNk1rzw+FT+BwyKqToGmCXB7v+rtFqIIzKTJNTMt9LLg+JmWqc28jUbdUiyQym7kw7s8VU= Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) by DB7PR04MB4764.eurprd04.prod.outlook.com (2603:10a6:10:15::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3131.25; Mon, 29 Jun 2020 06:35:48 +0000 Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::2d36:b569:17c:7701]) by DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::2d36:b569:17c:7701%4]) with mapi id 15.20.3131.026; Mon, 29 Jun 2020 06:35:48 +0000 From: Peng Fan To: "Michael S. Tsirkin" Subject: RE: [PATCH] xen: introduce xen_vring_use_dma Thread-Topic: [PATCH] xen: introduce xen_vring_use_dma Thread-Index: AQHWSgTusARd8c8cRkWwDit233DtZajneYoAgACU6oCAAC7QAIAAEpoAgAAGSwCAAUK2gIABcSaAgAPk6cCAADgrAIAAAH5wgAAC0YCAAABHUA== Date: Mon, 29 Jun 2020 06:35:48 +0000 Message-ID: References: <20200624050355-mutt-send-email-mst@kernel.org> <20200624163940-mutt-send-email-mst@kernel.org> <20200624181026-mutt-send-email-mst@kernel.org> <20200626110629-mutt-send-email-mst@kernel.org> <20200629022124-mutt-send-email-mst@kernel.org> <20200629023225-mutt-send-email-mst@kernel.org> In-Reply-To: <20200629023225-mutt-send-email-mst@kernel.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: redhat.com; dkim=none (message not signed) header.d=none;redhat.com; dmarc=none action=none header.from=nxp.com; x-originating-ip: [119.31.174.71] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: e07dc2d3-9155-49ce-2410-08d81bf6a91d x-ms-traffictypediagnostic: DB7PR04MB4764: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4714; x-forefront-prvs: 044968D9E1 x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: fK08amyxZaUi4JckED6/kpeUqMMw5buBVlalapbUcm+JSQK4QI84PEPgIYnkjkipS0xD9ABwB8ZcXtU/h/Y1OsDKtAVt4k4y7yMsyjn1Oa5BSHHepcIY7m4GIwnbEVNJJuthC4iVCMt+doQZU+ZAh26iGubJ/DeuGuOOXyNv4oM6PLJurQOiHffS1g7sdTacZiTsr+zppsy1C/3VBuisiyRVGG4KfeS0ux+2g8v3UsA7a2J/kgVZnBPHi2P5+10HIdKRjvpPPZ6yxmJFe43F3T3WeOuT1xkhR6Zi6ivDSCaAWVO+op7BLHTy95nrWHskMjgKfYQDmudAalEtAL7cIA== x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:DB6PR0402MB2760.eurprd04.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(4636009)(366004)(396003)(346002)(376002)(136003)(39860400002)(66946007)(8936002)(8676002)(7416002)(9686003)(83380400001)(86362001)(44832011)(26005)(64756008)(2906002)(66556008)(6916009)(4326008)(66476007)(6506007)(66446008)(186003)(76116006)(4744005)(71200400001)(5660300002)(33656002)(478600001)(55016002)(316002)(7696005)(52536014)(54906003); DIR:OUT; SFP:1101; x-ms-exchange-antispam-messagedata: 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 MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: e07dc2d3-9155-49ce-2410-08d81bf6a91d X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jun 2020 06:35:48.4429 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: NmRyPfTWtT9tmgZRVPpOrkiU+mkQIwuldVriqMockyAX0T7RoLpPgZZtv1zNbSJXKaVO8ByTSQcBW7CQ4G2crw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB4764 Cc: "jgross@suse.com" , Stefano Stabellini , "konrad.wilk@oracle.com" , "jasowang@redhat.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "iommu@lists.linux-foundation.org" , dl-linux-imx , "xen-devel@lists.xenproject.org" , "boris.ostrovsky@oracle.com" , "linux-arm-kernel@lists.infradead.org" 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" > Subject: Re: [PATCH] xen: introduce xen_vring_use_dma > > On Mon, Jun 29, 2020 at 06:25:41AM +0000, Peng Fan wrote: > > > > > > Anyway, re-reading the last messages of the original thread > > > > > > [1], it looks like Peng had a clear idea on how to fix the general issue. > > > > > > Peng, what happened with that? > > > > > > > > We shrinked the rpmsg reserved area to workaround the issue. > > > > So still use the dma apis in rpmsg. > > > > > > > > But here I am going to address domu android trusty issue using virtio. > > > > > > My suggestion is to first of all fix DMA API so it works properly. > > > > Could you please elaborate more details? > > > > You mean the DMA API usage of rpmsg? Or xen domu dma_ops? > > > > Thanks, > > Peng. > > Not 100% sure but I think xen dma ops. Sorry to ask again, could you explain more details about what issues do you see of current xen ARM domu dma_ops? Or Dom0 swiotlb xen dma_ops? Thanks, Pen.g > > -- > MST _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peng Fan Subject: RE: [PATCH] xen: introduce xen_vring_use_dma Date: Mon, 29 Jun 2020 06:35:48 +0000 Message-ID: References: <20200624050355-mutt-send-email-mst@kernel.org> <20200624163940-mutt-send-email-mst@kernel.org> <20200624181026-mutt-send-email-mst@kernel.org> <20200626110629-mutt-send-email-mst@kernel.org> <20200629022124-mutt-send-email-mst@kernel.org> <20200629023225-mutt-send-email-mst@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20200629023225-mutt-send-email-mst@kernel.org> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" To: "Michael S. Tsirkin" Cc: "jgross@suse.com" , Stefano Stabellini , "konrad.wilk@oracle.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "iommu@lists.linux-foundation.org" , dl-linux-imx , "xen-devel@lists.xenproject.org" , "boris.ostrovsky@oracle.com" , "linux-arm-kernel@lists.infradead.org" List-Id: virtualization@lists.linuxfoundation.org > Subject: Re: [PATCH] xen: introduce xen_vring_use_dma > > On Mon, Jun 29, 2020 at 06:25:41AM +0000, Peng Fan wrote: > > > > > > Anyway, re-reading the last messages of the original thread > > > > > > [1], it looks like Peng had a clear idea on how to fix the general issue. > > > > > > Peng, what happened with that? > > > > > > > > We shrinked the rpmsg reserved area to workaround the issue. > > > > So still use the dma apis in rpmsg. > > > > > > > > But here I am going to address domu android trusty issue using virtio. > > > > > > My suggestion is to first of all fix DMA API so it works properly. > > > > Could you please elaborate more details? > > > > You mean the DMA API usage of rpmsg? Or xen domu dma_ops? > > > > Thanks, > > Peng. > > Not 100% sure but I think xen dma ops. Sorry to ask again, could you explain more details about what issues do you see of current xen ARM domu dma_ops? Or Dom0 swiotlb xen dma_ops? Thanks, Pen.g > > -- > MST 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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 E2D10C433DF for ; Mon, 29 Jun 2020 06:37:16 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 AC98B23135 for ; Mon, 29 Jun 2020 06:37:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="sziTY0G3"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="AmBn7Z1V" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AC98B23135 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:References:Message-ID:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=/1rFz/Bbn/mhpq/PvBYKkvhnAhLjSEH65QtAStFgX8o=; b=sziTY0G3gcvG7FilYq0ITM765 6kMQ6dn9e3ew8nsMu/IrpfnUFyfqJkLqMeVyaKQx4s4cyG5TMOIugCQ1P4aRlq9CIvU819IR9xinM 2Z6i4v+6LXovZu3OLzUIajiCz9cftLUZ31ban4T4kEnoTjBmA8EAGVYG6RWJnLTWyOaiieHq0nZug oS6/N4i3z8rGqIHFcGZXzt2FjvIk8CNc0t04HBwrlJi5AXWbU3UZDQOv5yuup8XhkKE4ahWVibKnK iBGD9e7fVOUwYJTdV2zTEUqDdy5WhuW1fGxtAck1yHDd6YJpghqARyB1jQQavdiGKewiPvnufuy13 FlZ+fqzTg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jpnOV-0002hz-9v; Mon, 29 Jun 2020 06:35:55 +0000 Received: from mail-eopbgr80044.outbound.protection.outlook.com ([40.107.8.44] helo=EUR04-VI1-obe.outbound.protection.outlook.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jpnOR-0002hW-W7 for linux-arm-kernel@lists.infradead.org; Mon, 29 Jun 2020 06:35:52 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Gzr/k4oCbcvEW7AiZGYcqOtnZAuZ87sdUvtk2U1+45np+2XqI2wkn+fFSSxJpPvBzvIfY95CTvIOq74St4++o8KZSmmblZNTye/HXpATwTRNThRGDatoR7ljUseNIFLWjftAAYrgrzzhTocZ/TiG3sCYqAeB1r2A0QBTr/A1BuQsislJYxR8T/fhQB79nJpgE5K96HOZEwU801Bn2jlsjNAYE4K+uG3LRDRjpBayLVgvveyp4ZZSzCLH0nB8khiVoZOn2Ld67ikv6ce9mfoHwXG40rdyS7MF+wCGem4kduqbS3hMeLpWkcEFDTQUvYhDSTh8Df04Ob2TLaJwJ8gtaA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jt9aKkcohM+VBBAMcQ1zSn0OzkcLoXfaQdNHqrsc8go=; b=I19SIRA9E+ml4KlImtDM2f6dT2GjHOpm/8bQAdGCULUf7DUSebu1q6C/JEQQ0ZoD5czHKgShajRH6E8quwskYdXQrzJfn+BWOHsgk/ylOAEslvjCLUXnqiYfrr31rvAWJsumKBYEoB53GLwvctI0j8ms0CZg5nttGNUPix2ZLACLyf8/jdtFuC95JbVqXotqdhbEoV0cgmf+v07H7UuHofCgk1ft3b8hZnXEyEeIUp23T10ZYTN/LgLHpL7WsN/+yuJc5e+M2O/sjq6bnvSKohrrNhgmA8xyXA7NlZAZkvgt3wCT/sr95qbheSpOaRlE434mT7ymF9kj/VMpYltmvQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jt9aKkcohM+VBBAMcQ1zSn0OzkcLoXfaQdNHqrsc8go=; b=AmBn7Z1Vgx95lJz5b3JxDQb7dpR0/wYgFEuq3Qzew0A79iEejI01TsVFHzD149IWXAhzENJq8qJnyaImapEQolKWf0QRGEawwdDBkZNk1rzw+FT+BwyKqToGmCXB7v+rtFqIIzKTJNTMt9LLg+JmWqc28jUbdUiyQym7kw7s8VU= Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) by DB7PR04MB4764.eurprd04.prod.outlook.com (2603:10a6:10:15::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3131.25; Mon, 29 Jun 2020 06:35:48 +0000 Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::2d36:b569:17c:7701]) by DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::2d36:b569:17c:7701%4]) with mapi id 15.20.3131.026; Mon, 29 Jun 2020 06:35:48 +0000 From: Peng Fan To: "Michael S. Tsirkin" Subject: RE: [PATCH] xen: introduce xen_vring_use_dma Thread-Topic: [PATCH] xen: introduce xen_vring_use_dma Thread-Index: AQHWSgTusARd8c8cRkWwDit233DtZajneYoAgACU6oCAAC7QAIAAEpoAgAAGSwCAAUK2gIABcSaAgAPk6cCAADgrAIAAAH5wgAAC0YCAAABHUA== Date: Mon, 29 Jun 2020 06:35:48 +0000 Message-ID: References: <20200624050355-mutt-send-email-mst@kernel.org> <20200624163940-mutt-send-email-mst@kernel.org> <20200624181026-mutt-send-email-mst@kernel.org> <20200626110629-mutt-send-email-mst@kernel.org> <20200629022124-mutt-send-email-mst@kernel.org> <20200629023225-mutt-send-email-mst@kernel.org> In-Reply-To: <20200629023225-mutt-send-email-mst@kernel.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: redhat.com; dkim=none (message not signed) header.d=none;redhat.com; dmarc=none action=none header.from=nxp.com; x-originating-ip: [119.31.174.71] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: e07dc2d3-9155-49ce-2410-08d81bf6a91d x-ms-traffictypediagnostic: DB7PR04MB4764: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4714; x-forefront-prvs: 044968D9E1 x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: fK08amyxZaUi4JckED6/kpeUqMMw5buBVlalapbUcm+JSQK4QI84PEPgIYnkjkipS0xD9ABwB8ZcXtU/h/Y1OsDKtAVt4k4y7yMsyjn1Oa5BSHHepcIY7m4GIwnbEVNJJuthC4iVCMt+doQZU+ZAh26iGubJ/DeuGuOOXyNv4oM6PLJurQOiHffS1g7sdTacZiTsr+zppsy1C/3VBuisiyRVGG4KfeS0ux+2g8v3UsA7a2J/kgVZnBPHi2P5+10HIdKRjvpPPZ6yxmJFe43F3T3WeOuT1xkhR6Zi6ivDSCaAWVO+op7BLHTy95nrWHskMjgKfYQDmudAalEtAL7cIA== x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:DB6PR0402MB2760.eurprd04.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(4636009)(366004)(396003)(346002)(376002)(136003)(39860400002)(66946007)(8936002)(8676002)(7416002)(9686003)(83380400001)(86362001)(44832011)(26005)(64756008)(2906002)(66556008)(6916009)(4326008)(66476007)(6506007)(66446008)(186003)(76116006)(4744005)(71200400001)(5660300002)(33656002)(478600001)(55016002)(316002)(7696005)(52536014)(54906003); DIR:OUT; SFP:1101; x-ms-exchange-antispam-messagedata: 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 MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: e07dc2d3-9155-49ce-2410-08d81bf6a91d X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jun 2020 06:35:48.4429 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: NmRyPfTWtT9tmgZRVPpOrkiU+mkQIwuldVriqMockyAX0T7RoLpPgZZtv1zNbSJXKaVO8ByTSQcBW7CQ4G2crw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB4764 X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "jgross@suse.com" , Stefano Stabellini , "konrad.wilk@oracle.com" , "jasowang@redhat.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "iommu@lists.linux-foundation.org" , dl-linux-imx , "xen-devel@lists.xenproject.org" , "boris.ostrovsky@oracle.com" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > Subject: Re: [PATCH] xen: introduce xen_vring_use_dma > > On Mon, Jun 29, 2020 at 06:25:41AM +0000, Peng Fan wrote: > > > > > > Anyway, re-reading the last messages of the original thread > > > > > > [1], it looks like Peng had a clear idea on how to fix the general issue. > > > > > > Peng, what happened with that? > > > > > > > > We shrinked the rpmsg reserved area to workaround the issue. > > > > So still use the dma apis in rpmsg. > > > > > > > > But here I am going to address domu android trusty issue using virtio. > > > > > > My suggestion is to first of all fix DMA API so it works properly. > > > > Could you please elaborate more details? > > > > You mean the DMA API usage of rpmsg? Or xen domu dma_ops? > > > > Thanks, > > Peng. > > Not 100% sure but I think xen dma ops. Sorry to ask again, could you explain more details about what issues do you see of current xen ARM domu dma_ops? Or Dom0 swiotlb xen dma_ops? Thanks, Pen.g > > -- > MST _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 90E9CC433E0 for ; Mon, 29 Jun 2020 06:36:04 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 5F41823130 for ; Mon, 29 Jun 2020 06:36:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="AmBn7Z1V" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F41823130 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jpnOT-0003KV-5L; Mon, 29 Jun 2020 06:35:53 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jpnOS-0003KQ-DK for xen-devel@lists.xenproject.org; Mon, 29 Jun 2020 06:35:52 +0000 X-Inumbo-ID: c5b9871c-b9d2-11ea-852f-12813bfff9fa Received: from EUR04-VI1-obe.outbound.protection.outlook.com (unknown [40.107.8.43]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id c5b9871c-b9d2-11ea-852f-12813bfff9fa; Mon, 29 Jun 2020 06:35:50 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Gzr/k4oCbcvEW7AiZGYcqOtnZAuZ87sdUvtk2U1+45np+2XqI2wkn+fFSSxJpPvBzvIfY95CTvIOq74St4++o8KZSmmblZNTye/HXpATwTRNThRGDatoR7ljUseNIFLWjftAAYrgrzzhTocZ/TiG3sCYqAeB1r2A0QBTr/A1BuQsislJYxR8T/fhQB79nJpgE5K96HOZEwU801Bn2jlsjNAYE4K+uG3LRDRjpBayLVgvveyp4ZZSzCLH0nB8khiVoZOn2Ld67ikv6ce9mfoHwXG40rdyS7MF+wCGem4kduqbS3hMeLpWkcEFDTQUvYhDSTh8Df04Ob2TLaJwJ8gtaA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jt9aKkcohM+VBBAMcQ1zSn0OzkcLoXfaQdNHqrsc8go=; b=I19SIRA9E+ml4KlImtDM2f6dT2GjHOpm/8bQAdGCULUf7DUSebu1q6C/JEQQ0ZoD5czHKgShajRH6E8quwskYdXQrzJfn+BWOHsgk/ylOAEslvjCLUXnqiYfrr31rvAWJsumKBYEoB53GLwvctI0j8ms0CZg5nttGNUPix2ZLACLyf8/jdtFuC95JbVqXotqdhbEoV0cgmf+v07H7UuHofCgk1ft3b8hZnXEyEeIUp23T10ZYTN/LgLHpL7WsN/+yuJc5e+M2O/sjq6bnvSKohrrNhgmA8xyXA7NlZAZkvgt3wCT/sr95qbheSpOaRlE434mT7ymF9kj/VMpYltmvQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jt9aKkcohM+VBBAMcQ1zSn0OzkcLoXfaQdNHqrsc8go=; b=AmBn7Z1Vgx95lJz5b3JxDQb7dpR0/wYgFEuq3Qzew0A79iEejI01TsVFHzD149IWXAhzENJq8qJnyaImapEQolKWf0QRGEawwdDBkZNk1rzw+FT+BwyKqToGmCXB7v+rtFqIIzKTJNTMt9LLg+JmWqc28jUbdUiyQym7kw7s8VU= Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) by DB7PR04MB4764.eurprd04.prod.outlook.com (2603:10a6:10:15::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3131.25; Mon, 29 Jun 2020 06:35:48 +0000 Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::2d36:b569:17c:7701]) by DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::2d36:b569:17c:7701%4]) with mapi id 15.20.3131.026; Mon, 29 Jun 2020 06:35:48 +0000 From: Peng Fan To: "Michael S. Tsirkin" Subject: RE: [PATCH] xen: introduce xen_vring_use_dma Thread-Topic: [PATCH] xen: introduce xen_vring_use_dma Thread-Index: AQHWSgTusARd8c8cRkWwDit233DtZajneYoAgACU6oCAAC7QAIAAEpoAgAAGSwCAAUK2gIABcSaAgAPk6cCAADgrAIAAAH5wgAAC0YCAAABHUA== Date: Mon, 29 Jun 2020 06:35:48 +0000 Message-ID: References: <20200624050355-mutt-send-email-mst@kernel.org> <20200624163940-mutt-send-email-mst@kernel.org> <20200624181026-mutt-send-email-mst@kernel.org> <20200626110629-mutt-send-email-mst@kernel.org> <20200629022124-mutt-send-email-mst@kernel.org> <20200629023225-mutt-send-email-mst@kernel.org> In-Reply-To: <20200629023225-mutt-send-email-mst@kernel.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: redhat.com; dkim=none (message not signed) header.d=none;redhat.com; dmarc=none action=none header.from=nxp.com; x-originating-ip: [119.31.174.71] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: e07dc2d3-9155-49ce-2410-08d81bf6a91d x-ms-traffictypediagnostic: DB7PR04MB4764: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4714; x-forefront-prvs: 044968D9E1 x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: fK08amyxZaUi4JckED6/kpeUqMMw5buBVlalapbUcm+JSQK4QI84PEPgIYnkjkipS0xD9ABwB8ZcXtU/h/Y1OsDKtAVt4k4y7yMsyjn1Oa5BSHHepcIY7m4GIwnbEVNJJuthC4iVCMt+doQZU+ZAh26iGubJ/DeuGuOOXyNv4oM6PLJurQOiHffS1g7sdTacZiTsr+zppsy1C/3VBuisiyRVGG4KfeS0ux+2g8v3UsA7a2J/kgVZnBPHi2P5+10HIdKRjvpPPZ6yxmJFe43F3T3WeOuT1xkhR6Zi6ivDSCaAWVO+op7BLHTy95nrWHskMjgKfYQDmudAalEtAL7cIA== x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:DB6PR0402MB2760.eurprd04.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(4636009)(366004)(396003)(346002)(376002)(136003)(39860400002)(66946007)(8936002)(8676002)(7416002)(9686003)(83380400001)(86362001)(44832011)(26005)(64756008)(2906002)(66556008)(6916009)(4326008)(66476007)(6506007)(66446008)(186003)(76116006)(4744005)(71200400001)(5660300002)(33656002)(478600001)(55016002)(316002)(7696005)(52536014)(54906003); DIR:OUT; SFP:1101; x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: e07dc2d3-9155-49ce-2410-08d81bf6a91d X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jun 2020 06:35:48.4429 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: NmRyPfTWtT9tmgZRVPpOrkiU+mkQIwuldVriqMockyAX0T7RoLpPgZZtv1zNbSJXKaVO8ByTSQcBW7CQ4G2crw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB4764 X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "jgross@suse.com" , Stefano Stabellini , "konrad.wilk@oracle.com" , "jasowang@redhat.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "iommu@lists.linux-foundation.org" , dl-linux-imx , "xen-devel@lists.xenproject.org" , "boris.ostrovsky@oracle.com" , "linux-arm-kernel@lists.infradead.org" Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" > Subject: Re: [PATCH] xen: introduce xen_vring_use_dma >=20 > On Mon, Jun 29, 2020 at 06:25:41AM +0000, Peng Fan wrote: > > > > > > Anyway, re-reading the last messages of the original thread > > > > > > [1], it looks like Peng had a clear idea on how to fix the gene= ral issue. > > > > > > Peng, what happened with that? > > > > > > > > We shrinked the rpmsg reserved area to workaround the issue. > > > > So still use the dma apis in rpmsg. > > > > > > > > But here I am going to address domu android trusty issue using virt= io. > > > > > > My suggestion is to first of all fix DMA API so it works properly. > > > > Could you please elaborate more details? > > > > You mean the DMA API usage of rpmsg? Or xen domu dma_ops? > > > > Thanks, > > Peng. >=20 > Not 100% sure but I think xen dma ops. Sorry to ask again, could you explain more details about what issues do you see of current xen ARM domu dma_ops?=20 Or Dom0 swiotlb xen dma_ops? Thanks, Pen.g >=20 > -- > MST