From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCHv6 7/7] ARM: dma-mapping: add support for IOMMU mapper Date: Fri, 24 Feb 2012 14:31:01 +0000 Message-ID: <201202241431.02170.arnd@arndb.de> References: <1328900324-20946-1-git-send-email-m.szyprowski@samsung.com> <201202241249.44731.arnd@arndb.de> <013301ccf2f6$bc4ad840$34e088c0$%szyprowski@samsung.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from moutng.kundenserver.de ([212.227.17.10]:62216 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754654Ab2BXObH (ORCPT ); Fri, 24 Feb 2012 09:31:07 -0500 In-Reply-To: <013301ccf2f6$bc4ad840$34e088c0$%szyprowski@samsung.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Marek Szyprowski Cc: 'Krishna Reddy' , linux-arm-kernel@lists.infradead.org, linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-samsung-soc@vger.kernel.org, iommu@lists.linux-foundation.org, 'Kyungmin Park' , 'Joerg Roedel' , 'Russell King - ARM Linux' , 'Chunsang Jeong' , 'KyongHo Cho' , Andrzej Pietrasiewicz , 'Benjamin Herrenschmidt' On Friday 24 February 2012, Marek Szyprowski wrote: > I want to use some kind of chained arrays, each of at most of PAGE_SIZE. This code > doesn't really need to keep these page pointers in contiguous virtual memory area, so > it will not be a problem here. > Sounds like sg_alloc_table(), could you reuse that instead of rolling your own? Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Fri, 24 Feb 2012 14:31:01 +0000 Subject: [PATCHv6 7/7] ARM: dma-mapping: add support for IOMMU mapper In-Reply-To: <013301ccf2f6$bc4ad840$34e088c0$%szyprowski@samsung.com> References: <1328900324-20946-1-git-send-email-m.szyprowski@samsung.com> <201202241249.44731.arnd@arndb.de> <013301ccf2f6$bc4ad840$34e088c0$%szyprowski@samsung.com> Message-ID: <201202241431.02170.arnd@arndb.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Friday 24 February 2012, Marek Szyprowski wrote: > I want to use some kind of chained arrays, each of at most of PAGE_SIZE. This code > doesn't really need to keep these page pointers in contiguous virtual memory area, so > it will not be a problem here. > Sounds like sg_alloc_table(), could you reuse that instead of rolling your own? Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx179.postini.com [74.125.245.179]) by kanga.kvack.org (Postfix) with SMTP id 15B956B00E9 for ; Fri, 24 Feb 2012 09:31:21 -0500 (EST) From: Arnd Bergmann Subject: Re: [PATCHv6 7/7] ARM: dma-mapping: add support for IOMMU mapper Date: Fri, 24 Feb 2012 14:31:01 +0000 References: <1328900324-20946-1-git-send-email-m.szyprowski@samsung.com> <201202241249.44731.arnd@arndb.de> <013301ccf2f6$bc4ad840$34e088c0$%szyprowski@samsung.com> In-Reply-To: <013301ccf2f6$bc4ad840$34e088c0$%szyprowski@samsung.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201202241431.02170.arnd@arndb.de> Sender: owner-linux-mm@kvack.org List-ID: To: Marek Szyprowski Cc: 'Krishna Reddy' , linux-arm-kernel@lists.infradead.org, linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-samsung-soc@vger.kernel.org, iommu@lists.linux-foundation.org, 'Kyungmin Park' , 'Joerg Roedel' , 'Russell King - ARM Linux' , 'Chunsang Jeong' , 'KyongHo Cho' , Andrzej Pietrasiewicz , 'Benjamin Herrenschmidt' On Friday 24 February 2012, Marek Szyprowski wrote: > I want to use some kind of chained arrays, each of at most of PAGE_SIZE. This code > doesn't really need to keep these page pointers in contiguous virtual memory area, so > it will not be a problem here. > Sounds like sg_alloc_table(), could you reuse that instead of rolling your own? Arnd -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org