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,URIBL_BLOCKED,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 3C306C3A5AA for ; Wed, 4 Sep 2019 07:00:42 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 0EDFF22CED for ; Wed, 4 Sep 2019 07:00:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0EDFF22CED Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id D11EA1061; Wed, 4 Sep 2019 07:00:41 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id E9222105B for ; Wed, 4 Sep 2019 07:00:39 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 183E6709 for ; Wed, 4 Sep 2019 07:00:37 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 57523227A8A; Wed, 4 Sep 2019 09:00:33 +0200 (CEST) Date: Wed, 4 Sep 2019 09:00:33 +0200 From: Christoph Hellwig To: Boris Ostrovsky Subject: Re: [PATCH 08/13] swiotlb-xen: always use dma-direct helpers to alloc coherent pages Message-ID: <20190904070033.GA11643@lst.de> References: <20190902130339.23163-1-hch@lst.de> <20190902130339.23163-9-hch@lst.de> <5799ca4b-7993-b1c5-73fa-396a560f58e8@oracle.com> <8a7f9e23-ef26-e83b-8d1e-dcd7d233642a@oracle.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <8a7f9e23-ef26-e83b-8d1e-dcd7d233642a@oracle.com> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Juergen Gross , Stefano Stabellini , Konrad Rzeszutek Wilk , x86@kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org, Christoph Hellwig , linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 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 Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org On Tue, Sep 03, 2019 at 06:25:54PM -0400, Boris Ostrovsky wrote: > > If I am reading __dma_direct_alloc_pages() correctly there is a path > > that will force us to use GFP_DMA32 and as Juergen pointed out in > > another message that may not be desirable. Yes, it will add GFP_DMA32. So I guess for now we'll just keep the direct page allocator calls and resend. I don't think this is the right thing to do long term, but I'd really like to get this series finished. _______________________________________________ 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 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,URIBL_BLOCKED,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 E78BCC3A5A9 for ; Wed, 4 Sep 2019 07:00:53 +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 C238222CED for ; 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Wed, 4 Sep 2019 09:00:33 +0200 (CEST) Date: Wed, 4 Sep 2019 09:00:33 +0200 From: Christoph Hellwig To: Boris Ostrovsky Message-ID: <20190904070033.GA11643@lst.de> References: <20190902130339.23163-1-hch@lst.de> <20190902130339.23163-9-hch@lst.de> <5799ca4b-7993-b1c5-73fa-396a560f58e8@oracle.com> <8a7f9e23-ef26-e83b-8d1e-dcd7d233642a@oracle.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <8a7f9e23-ef26-e83b-8d1e-dcd7d233642a@oracle.com> User-Agent: Mutt/1.5.17 (2007-11-01) Subject: Re: [Xen-devel] [PATCH 08/13] swiotlb-xen: always use dma-direct helpers to alloc coherent pages X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Juergen Gross , Stefano Stabellini , Konrad Rzeszutek Wilk , x86@kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org, Christoph Hellwig , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" T24gVHVlLCBTZXAgMDMsIDIwMTkgYXQgMDY6MjU6NTRQTSAtMDQwMCwgQm9yaXMgT3N0cm92c2t5 IHdyb3RlOgo+ID4gSWYgSSBhbSByZWFkaW5nIF9fZG1hX2RpcmVjdF9hbGxvY19wYWdlcygpIGNv cnJlY3RseSB0aGVyZSBpcyBhIHBhdGgKPiA+IHRoYXQgd2lsbCBmb3JjZSB1cyB0byB1c2UgR0ZQ X0RNQTMyIGFuZCBhcyBKdWVyZ2VuIHBvaW50ZWQgb3V0IGluCj4gPiBhbm90aGVyIG1lc3NhZ2Ug dGhhdCBtYXkgbm90IGJlIGRlc2lyYWJsZS4KClllcywgaXQgd2lsbCBhZGQgR0ZQX0RNQTMyLiAg U28gSSBndWVzcyBmb3Igbm93IHdlJ2xsIGp1c3Qga2VlcCB0aGUKZGlyZWN0IHBhZ2UgYWxsb2Nh dG9yIGNhbGxzIGFuZCByZXNlbmQuICBJIGRvbid0IHRoaW5rIHRoaXMgaXMgdGhlCnJpZ2h0IHRo aW5nIHRvIGRvIGxvbmcgdGVybSwgYnV0IEknZCByZWFsbHkgbGlrZSB0byBnZXQgdGhpcyBzZXJp ZXMKZmluaXNoZWQuCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9y ZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs 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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 0E6A6C3A5A9 for ; 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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: Juergen Gross , Stefano Stabellini , Konrad Rzeszutek Wilk , x86@kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org, Christoph Hellwig , 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+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 03, 2019 at 06:25:54PM -0400, Boris Ostrovsky wrote: > > If I am reading __dma_direct_alloc_pages() correctly there is a path > > that will force us to use GFP_DMA32 and as Juergen pointed out in > > another message that may not be desirable. Yes, it will add GFP_DMA32. So I guess for now we'll just keep the direct page allocator calls and resend. I don't think this is the right thing to do long term, but I'd really like to get this series finished. _______________________________________________ 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=-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 2FC70C3A5A8 for ; Wed, 4 Sep 2019 07:00:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0659522CED for ; Wed, 4 Sep 2019 07:00:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728756AbfIDHAi (ORCPT ); Wed, 4 Sep 2019 03:00:38 -0400 Received: from verein.lst.de ([213.95.11.211]:36623 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727787AbfIDHAh (ORCPT ); Wed, 4 Sep 2019 03:00:37 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 57523227A8A; Wed, 4 Sep 2019 09:00:33 +0200 (CEST) Date: Wed, 4 Sep 2019 09:00:33 +0200 From: Christoph Hellwig To: Boris Ostrovsky Cc: Christoph Hellwig , Stefano Stabellini , Konrad Rzeszutek Wilk , Juergen Gross , x86@kernel.org, linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 08/13] swiotlb-xen: always use dma-direct helpers to alloc coherent pages Message-ID: <20190904070033.GA11643@lst.de> References: <20190902130339.23163-1-hch@lst.de> <20190902130339.23163-9-hch@lst.de> <5799ca4b-7993-b1c5-73fa-396a560f58e8@oracle.com> <8a7f9e23-ef26-e83b-8d1e-dcd7d233642a@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8a7f9e23-ef26-e83b-8d1e-dcd7d233642a@oracle.com> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 03, 2019 at 06:25:54PM -0400, Boris Ostrovsky wrote: > > If I am reading __dma_direct_alloc_pages() correctly there is a path > > that will force us to use GFP_DMA32 and as Juergen pointed out in > > another message that may not be desirable. Yes, it will add GFP_DMA32. So I guess for now we'll just keep the direct page allocator calls and resend. I don't think this is the right thing to do long term, but I'd really like to get this series finished.