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=-8.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 0DA34C2D0E2 for ; Tue, 22 Sep 2020 11:00:53 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (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 4440920888 for ; Tue, 22 Sep 2020 11:00:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="MEaoU8p3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4440920888 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=alpha.franken.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 26A3B16ED; Tue, 22 Sep 2020 13:00:00 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 26A3B16ED DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1600772450; bh=MzywdI4R4WvJvnQRqnmf5FPtXmYE3xjZ/4/lyk/mDoY=; h=Date:From:To:Subject:References:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=MEaoU8p3xyQe9DZ79+yzjezRbTXYsEIYgOscVY6uQFdlr+VYI9sYziTy5vTz6SaCw QQNmss+wyEtuhkJkkQYF2CdH/MHLLHYtC9Ggu7JCmVq954606MMj8SN51WQ7xsyqJh UsHUIGqUTkiMjiMmjwzL38b9nEaZkRwzsXPxCM/A= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id C23BDF802E9; Tue, 22 Sep 2020 12:56:41 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 08248F80232; Tue, 22 Sep 2020 12:56:34 +0200 (CEST) Received: from elvis.franken.de (elvis.franken.de [193.175.24.41]) by alsa1.perex.cz (Postfix) with ESMTP id EFF35F80271 for ; Tue, 22 Sep 2020 12:56:19 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz EFF35F80271 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1kKfxs-000822-01; Tue, 22 Sep 2020 12:56:04 +0200 Received: by alpha.franken.de (Postfix, from userid 1000) id 9FA31C0FFF; Tue, 22 Sep 2020 10:53:14 +0200 (CEST) Date: Tue, 22 Sep 2020 10:53:14 +0200 From: Thomas Bogendoerfer To: Christoph Hellwig Subject: Re: [PATCH 15/18] dma-mapping: add a new dma_alloc_pages API Message-ID: <20200922085314.GI8477@alpha.franken.de> References: <20200915155122.1768241-1-hch@lst.de> <20200915155122.1768241-16-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200915155122.1768241-16-hch@lst.de> User-Agent: Mutt/1.5.23 (2014-03-12) Cc: alsa-devel@alsa-project.org, linux-doc@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, "James E.J. Bottomley" , linux-mm@kvack.org, linux1394-devel@lists.sourceforge.net, Marek Szyprowski , linux-samsung-soc@vger.kernel.org, Joonyoung Shim , linux-scsi@vger.kernel.org, Ben Skeggs , Matt Porter , linux-media@vger.kernel.org, Mauro Carvalho Chehab , linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, netdev@vger.kernel.org, Seung-Woo Kim , linux-mips@vger.kernel.org, Tomasz Figa , iommu@lists.linux-foundation.org, Stefan Richter X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On Tue, Sep 15, 2020 at 05:51:19PM +0200, Christoph Hellwig wrote: > This API is the equivalent of alloc_pages, except that the returned memory > is guaranteed to be DMA addressable by the passed in device. The > implementation will also be used to provide a more sensible replacement > for DMA_ATTR_NON_CONSISTENT flag. > > Additionally dma_alloc_noncoherent is switched over to use dma_alloc_pages > as its backend. > > Signed-off-by: Christoph Hellwig > --- > Documentation/core-api/dma-attributes.rst | 8 --- > arch/alpha/kernel/pci_iommu.c | 2 + > arch/arm/mm/dma-mapping-nommu.c | 2 + > arch/arm/mm/dma-mapping.c | 4 ++ > arch/ia64/hp/common/sba_iommu.c | 2 + > arch/mips/jazz/jazzdma.c | 7 +-- > arch/powerpc/kernel/dma-iommu.c | 2 + > arch/powerpc/platforms/ps3/system-bus.c | 4 ++ > arch/powerpc/platforms/pseries/vio.c | 2 + > arch/s390/pci/pci_dma.c | 2 + > arch/x86/kernel/amd_gart_64.c | 2 + > drivers/iommu/dma-iommu.c | 2 + > drivers/iommu/intel/iommu.c | 4 ++ > drivers/parisc/ccio-dma.c | 2 + > drivers/parisc/sba_iommu.c | 2 + > drivers/xen/swiotlb-xen.c | 2 + > include/linux/dma-direct.h | 5 ++ > include/linux/dma-mapping.h | 34 ++++++------ > include/linux/dma-noncoherent.h | 3 -- > kernel/dma/direct.c | 52 ++++++++++++++++++- > kernel/dma/mapping.c | 63 +++++++++++++++++++++-- > kernel/dma/ops_helpers.c | 35 +++++++++++++ > kernel/dma/virt.c | 2 + > 23 files changed, 206 insertions(+), 37 deletions(-) Acked-by: Thomas Bogendoerfer (MIPS part) -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ] 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=-8.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 C299DC2D0E2 for ; Tue, 22 Sep 2020 11:48:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 740B122574 for ; Tue, 22 Sep 2020 11:48:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726739AbgIVLsR (ORCPT ); Tue, 22 Sep 2020 07:48:17 -0400 Received: from elvis.franken.de ([193.175.24.41]:51246 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726706AbgIVLrP (ORCPT ); Tue, 22 Sep 2020 07:47:15 -0400 X-Greylist: delayed 3049 seconds by postgrey-1.27 at vger.kernel.org; Tue, 22 Sep 2020 07:47:10 EDT Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1kKfxs-000822-01; Tue, 22 Sep 2020 12:56:04 +0200 Received: by alpha.franken.de (Postfix, from userid 1000) id 9FA31C0FFF; Tue, 22 Sep 2020 10:53:14 +0200 (CEST) Date: Tue, 22 Sep 2020 10:53:14 +0200 From: Thomas Bogendoerfer To: Christoph Hellwig Cc: Mauro Carvalho Chehab , "James E.J. Bottomley" , Joonyoung Shim , Seung-Woo Kim , Ben Skeggs , Marek Szyprowski , Tomasz Figa , Matt Porter , iommu@lists.linux-foundation.org, Stefan Richter , linux1394-devel@lists.sourceforge.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, netdev@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org Subject: Re: [PATCH 15/18] dma-mapping: add a new dma_alloc_pages API Message-ID: <20200922085314.GI8477@alpha.franken.de> References: <20200915155122.1768241-1-hch@lst.de> <20200915155122.1768241-16-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200915155122.1768241-16-hch@lst.de> User-Agent: Mutt/1.5.23 (2014-03-12) Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Tue, Sep 15, 2020 at 05:51:19PM +0200, Christoph Hellwig wrote: > This API is the equivalent of alloc_pages, except that the returned memory > is guaranteed to be DMA addressable by the passed in device. The > implementation will also be used to provide a more sensible replacement > for DMA_ATTR_NON_CONSISTENT flag. > > Additionally dma_alloc_noncoherent is switched over to use dma_alloc_pages > as its backend. > > Signed-off-by: Christoph Hellwig > --- > Documentation/core-api/dma-attributes.rst | 8 --- > arch/alpha/kernel/pci_iommu.c | 2 + > arch/arm/mm/dma-mapping-nommu.c | 2 + > arch/arm/mm/dma-mapping.c | 4 ++ > arch/ia64/hp/common/sba_iommu.c | 2 + > arch/mips/jazz/jazzdma.c | 7 +-- > arch/powerpc/kernel/dma-iommu.c | 2 + > arch/powerpc/platforms/ps3/system-bus.c | 4 ++ > arch/powerpc/platforms/pseries/vio.c | 2 + > arch/s390/pci/pci_dma.c | 2 + > arch/x86/kernel/amd_gart_64.c | 2 + > drivers/iommu/dma-iommu.c | 2 + > drivers/iommu/intel/iommu.c | 4 ++ > drivers/parisc/ccio-dma.c | 2 + > drivers/parisc/sba_iommu.c | 2 + > drivers/xen/swiotlb-xen.c | 2 + > include/linux/dma-direct.h | 5 ++ > include/linux/dma-mapping.h | 34 ++++++------ > include/linux/dma-noncoherent.h | 3 -- > kernel/dma/direct.c | 52 ++++++++++++++++++- > kernel/dma/mapping.c | 63 +++++++++++++++++++++-- > kernel/dma/ops_helpers.c | 35 +++++++++++++ > kernel/dma/virt.c | 2 + > 23 files changed, 206 insertions(+), 37 deletions(-) Acked-by: Thomas Bogendoerfer (MIPS part) -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ] 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=-8.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 13459C47423 for ; Tue, 22 Sep 2020 10:56:21 +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 BEAAF23A5F for ; Tue, 22 Sep 2020 10:56:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BEAAF23A5F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=alpha.franken.de 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 78B9E866A7; Tue, 22 Sep 2020 10:56:20 +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 ju1d02M07vsK; Tue, 22 Sep 2020 10:56:17 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id C8222866C7; Tue, 22 Sep 2020 10:56:17 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id B253EC0895; Tue, 22 Sep 2020 10:56:17 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id DF77AC0889 for ; Tue, 22 Sep 2020 10:56:15 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id D7E50872C4 for ; Tue, 22 Sep 2020 10:56:15 +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 cNORNCC7L97P for ; Tue, 22 Sep 2020 10:56:13 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from elvis.franken.de (elvis.franken.de [193.175.24.41]) by hemlock.osuosl.org (Postfix) with ESMTP id 73804872BF for ; Tue, 22 Sep 2020 10:56:13 +0000 (UTC) Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1kKfxs-000822-01; Tue, 22 Sep 2020 12:56:04 +0200 Received: by alpha.franken.de (Postfix, from userid 1000) id 9FA31C0FFF; Tue, 22 Sep 2020 10:53:14 +0200 (CEST) Date: Tue, 22 Sep 2020 10:53:14 +0200 From: Thomas Bogendoerfer To: Christoph Hellwig Subject: Re: [PATCH 15/18] dma-mapping: add a new dma_alloc_pages API Message-ID: <20200922085314.GI8477@alpha.franken.de> References: <20200915155122.1768241-1-hch@lst.de> <20200915155122.1768241-16-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200915155122.1768241-16-hch@lst.de> User-Agent: Mutt/1.5.23 (2014-03-12) Cc: alsa-devel@alsa-project.org, linux-doc@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, "James E.J. Bottomley" , linux-mm@kvack.org, linux1394-devel@lists.sourceforge.net, linux-samsung-soc@vger.kernel.org, Joonyoung Shim , linux-scsi@vger.kernel.org, Ben Skeggs , Matt Porter , linux-media@vger.kernel.org, Mauro Carvalho Chehab , linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, netdev@vger.kernel.org, Seung-Woo Kim , linux-mips@vger.kernel.org, iommu@lists.linux-foundation.org, Stefan Richter 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" On Tue, Sep 15, 2020 at 05:51:19PM +0200, Christoph Hellwig wrote: > This API is the equivalent of alloc_pages, except that the returned memory > is guaranteed to be DMA addressable by the passed in device. The > implementation will also be used to provide a more sensible replacement > for DMA_ATTR_NON_CONSISTENT flag. > > Additionally dma_alloc_noncoherent is switched over to use dma_alloc_pages > as its backend. > > Signed-off-by: Christoph Hellwig > --- > Documentation/core-api/dma-attributes.rst | 8 --- > arch/alpha/kernel/pci_iommu.c | 2 + > arch/arm/mm/dma-mapping-nommu.c | 2 + > arch/arm/mm/dma-mapping.c | 4 ++ > arch/ia64/hp/common/sba_iommu.c | 2 + > arch/mips/jazz/jazzdma.c | 7 +-- > arch/powerpc/kernel/dma-iommu.c | 2 + > arch/powerpc/platforms/ps3/system-bus.c | 4 ++ > arch/powerpc/platforms/pseries/vio.c | 2 + > arch/s390/pci/pci_dma.c | 2 + > arch/x86/kernel/amd_gart_64.c | 2 + > drivers/iommu/dma-iommu.c | 2 + > drivers/iommu/intel/iommu.c | 4 ++ > drivers/parisc/ccio-dma.c | 2 + > drivers/parisc/sba_iommu.c | 2 + > drivers/xen/swiotlb-xen.c | 2 + > include/linux/dma-direct.h | 5 ++ > include/linux/dma-mapping.h | 34 ++++++------ > include/linux/dma-noncoherent.h | 3 -- > kernel/dma/direct.c | 52 ++++++++++++++++++- > kernel/dma/mapping.c | 63 +++++++++++++++++++++-- > kernel/dma/ops_helpers.c | 35 +++++++++++++ > kernel/dma/virt.c | 2 + > 23 files changed, 206 insertions(+), 37 deletions(-) Acked-by: Thomas Bogendoerfer (MIPS part) -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ] _______________________________________________ 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: Thomas Bogendoerfer Subject: Re: [PATCH 15/18] dma-mapping: add a new dma_alloc_pages API Date: Tue, 22 Sep 2020 10:53:14 +0200 Message-ID: <20200922085314.GI8477@alpha.franken.de> References: <20200915155122.1768241-1-hch@lst.de> <20200915155122.1768241-16-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20200915155122.1768241-16-hch@lst.de> To: Christoph Hellwig Cc: Mauro Carvalho Chehab , "James E.J. Bottomley" , Joonyoung Shim , Seung-Woo Kim , Ben Skeggs , Marek Szyprowski , Tomasz Figa , Matt Porter , iommu@lists.linux-foundation.org, Stefan Richter , linux1394-devel@lists.sourceforge.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, netdev@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mm@kvack List-Id: nouveau.vger.kernel.org On Tue, Sep 15, 2020 at 05:51:19PM +0200, Christoph Hellwig wrote: > This API is the equivalent of alloc_pages, except that the returned memory > is guaranteed to be DMA addressable by the passed in device. The > implementation will also be used to provide a more sensible replacement > for DMA_ATTR_NON_CONSISTENT flag. > > Additionally dma_alloc_noncoherent is switched over to use dma_alloc_pages > as its backend. > > Signed-off-by: Christoph Hellwig > --- > Documentation/core-api/dma-attributes.rst | 8 --- > arch/alpha/kernel/pci_iommu.c | 2 + > arch/arm/mm/dma-mapping-nommu.c | 2 + > arch/arm/mm/dma-mapping.c | 4 ++ > arch/ia64/hp/common/sba_iommu.c | 2 + > arch/mips/jazz/jazzdma.c | 7 +-- > arch/powerpc/kernel/dma-iommu.c | 2 + > arch/powerpc/platforms/ps3/system-bus.c | 4 ++ > arch/powerpc/platforms/pseries/vio.c | 2 + > arch/s390/pci/pci_dma.c | 2 + > arch/x86/kernel/amd_gart_64.c | 2 + > drivers/iommu/dma-iommu.c | 2 + > drivers/iommu/intel/iommu.c | 4 ++ > drivers/parisc/ccio-dma.c | 2 + > drivers/parisc/sba_iommu.c | 2 + > drivers/xen/swiotlb-xen.c | 2 + > include/linux/dma-direct.h | 5 ++ > include/linux/dma-mapping.h | 34 ++++++------ > include/linux/dma-noncoherent.h | 3 -- > kernel/dma/direct.c | 52 ++++++++++++++++++- > kernel/dma/mapping.c | 63 +++++++++++++++++++++-- > kernel/dma/ops_helpers.c | 35 +++++++++++++ > kernel/dma/virt.c | 2 + > 23 files changed, 206 insertions(+), 37 deletions(-) Acked-by: Thomas Bogendoerfer (MIPS part) -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ] 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=-9.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 A82E9C4727F for ; Tue, 22 Sep 2020 11:01:58 +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 21DC920739 for ; Tue, 22 Sep 2020 11:01:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="sYavHtmG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 21DC920739 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=alpha.franken.de 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:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=2O0jXcJgftmdvfyGKyurCmYRXc+bivTejs0tmwacLQs=; b=sYavHtmGt8mGtnENaXlxtA6Sl GOltQgFFQk8yxl56+lhWlyIWh6kYdLu/NRubtfgCjmNunnaeo44yWjIN4ZhzgyMs1MewRwiSzqAaG huERfiWv+F0TTU3IkPzDdw8V9ONqwZzBkl88EBUHKBy0a4P1cWkpSIoINUP/pkZDIzu3Tn60C6M9g 2yHCFW0LkqCe/zTVjzPi7B+rLntB0lV4b25pLNYP9dn+7M92Hoo/r5tO6gPdEt+cfFrznDZa6evwg WXJYCMLDkvU7cf/m1vyWr2BGNMY13n5oEgpxN6/RG+nNjYSfOS6vDw/q+w1X2gAXzbkqtfeglWSo/ L1WOCKTXQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKg0W-0000Rj-9U; Tue, 22 Sep 2020 10:58:48 +0000 Received: from elvis.franken.de ([193.175.24.41]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKfy4-0007uP-KS for linux-arm-kernel@lists.infradead.org; Tue, 22 Sep 2020 10:56:18 +0000 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1kKfxs-000822-01; Tue, 22 Sep 2020 12:56:04 +0200 Received: by alpha.franken.de (Postfix, from userid 1000) id 9FA31C0FFF; Tue, 22 Sep 2020 10:53:14 +0200 (CEST) Date: Tue, 22 Sep 2020 10:53:14 +0200 From: Thomas Bogendoerfer To: Christoph Hellwig Subject: Re: [PATCH 15/18] dma-mapping: add a new dma_alloc_pages API Message-ID: <20200922085314.GI8477@alpha.franken.de> References: <20200915155122.1768241-1-hch@lst.de> <20200915155122.1768241-16-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200915155122.1768241-16-hch@lst.de> User-Agent: Mutt/1.5.23 (2014-03-12) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200922_065617_047262_27408C75 X-CRM114-Status: GOOD ( 18.33 ) 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: alsa-devel@alsa-project.org, linux-doc@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, "James E.J. Bottomley" , linux-mm@kvack.org, linux1394-devel@lists.sourceforge.net, Marek Szyprowski , linux-samsung-soc@vger.kernel.org, Joonyoung Shim , linux-scsi@vger.kernel.org, Ben Skeggs , Matt Porter , linux-media@vger.kernel.org, Mauro Carvalho Chehab , linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, netdev@vger.kernel.org, Seung-Woo Kim , linux-mips@vger.kernel.org, Tomasz Figa , iommu@lists.linux-foundation.org, Stefan Richter 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 On Tue, Sep 15, 2020 at 05:51:19PM +0200, Christoph Hellwig wrote: > This API is the equivalent of alloc_pages, except that the returned memory > is guaranteed to be DMA addressable by the passed in device. The > implementation will also be used to provide a more sensible replacement > for DMA_ATTR_NON_CONSISTENT flag. > > Additionally dma_alloc_noncoherent is switched over to use dma_alloc_pages > as its backend. > > Signed-off-by: Christoph Hellwig > --- > Documentation/core-api/dma-attributes.rst | 8 --- > arch/alpha/kernel/pci_iommu.c | 2 + > arch/arm/mm/dma-mapping-nommu.c | 2 + > arch/arm/mm/dma-mapping.c | 4 ++ > arch/ia64/hp/common/sba_iommu.c | 2 + > arch/mips/jazz/jazzdma.c | 7 +-- > arch/powerpc/kernel/dma-iommu.c | 2 + > arch/powerpc/platforms/ps3/system-bus.c | 4 ++ > arch/powerpc/platforms/pseries/vio.c | 2 + > arch/s390/pci/pci_dma.c | 2 + > arch/x86/kernel/amd_gart_64.c | 2 + > drivers/iommu/dma-iommu.c | 2 + > drivers/iommu/intel/iommu.c | 4 ++ > drivers/parisc/ccio-dma.c | 2 + > drivers/parisc/sba_iommu.c | 2 + > drivers/xen/swiotlb-xen.c | 2 + > include/linux/dma-direct.h | 5 ++ > include/linux/dma-mapping.h | 34 ++++++------ > include/linux/dma-noncoherent.h | 3 -- > kernel/dma/direct.c | 52 ++++++++++++++++++- > kernel/dma/mapping.c | 63 +++++++++++++++++++++-- > kernel/dma/ops_helpers.c | 35 +++++++++++++ > kernel/dma/virt.c | 2 + > 23 files changed, 206 insertions(+), 37 deletions(-) Acked-by: Thomas Bogendoerfer (MIPS part) -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ] _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel