From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx143.postini.com [74.125.245.143]) by kanga.kvack.org (Postfix) with SMTP id A61F46B005A for ; Fri, 23 Dec 2011 05:00:39 -0500 (EST) Received: by mail-vw0-f42.google.com with SMTP id fd1so7275211vbb.15 for ; Fri, 23 Dec 2011 02:00:39 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <201112211727.17104.arnd@arndb.de> References: <1322816252-19955-1-git-send-email-sumit.semwal@ti.com> <20111220171437.GC3883@phenom.ffwll.local> <201112211727.17104.arnd@arndb.de> From: "Semwal, Sumit" Date: Fri, 23 Dec 2011 15:30:18 +0530 Message-ID: Subject: Re: [Linaro-mm-sig] [RFC v2 1/2] dma-buf: Introduce dma buffer sharing mechanism Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: Arnd Bergmann Cc: Daniel Vetter , Rob Clark , Alan Cox , linux@arm.linux.org.uk, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org On Wed, Dec 21, 2011 at 10:57 PM, Arnd Bergmann wrote: > On Tuesday 20 December 2011, Daniel Vetter wrote: >> > I'm thinking for a first version, we can get enough mileage out of it by saying: >> > 1) only exporter can mmap to userspace >> > 2) only importers that do not need CPU access to buffer.. Thanks Rob - and the exporter can do the mmap outside of dma-buf usage, right? I mean, we don't need to provide an mmap to dma_buf() and restrict it to exporter, when the exporter has more 'control' of the buffer anyways. > BR, ~Sumit. -- 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