From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joel Schopp Subject: Re: [PATCH 21/21]: powerpc/cell spidernet DMA coalescing Date: Fri, 13 Oct 2006 21:12:01 -0500 Message-ID: <45304771.70606@austin.ibm.com> References: <20061010204946.GW4381@austin.ibm.com> <20061010212324.GR4381@austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: akpm@osdl.org, jeff@garzik.org, Arnd Bergmann , netdev@vger.kernel.org, James K Lewis , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Return-path: To: Linas Vepstas In-Reply-To: <20061010212324.GR4381@austin.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linuxppc-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@ozlabs.org Errors-To: linuxppc-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@ozlabs.org List-Id: netdev.vger.kernel.org Linas Vepstas wrote: > The current driver code performs 512 DMA mappns of a bunch of > 32-byte structures. This is silly, as they are all in contiguous > memory. Ths patch changes the code to DMA map the entie area > with just one call. > > Signed-off-by: Linas Vepstas > Cc: James K Lewis > Cc: Arnd Bergmann While this patch wasn't useful in the current cell implementation of pci_map_single it sounds like people are going to be making changes to that sometime. In light of that new information (new to me anyway) this should probably go in after all. Sorry for causing trouble. Acked-by: Joel Schopp