From mboxrd@z Thu Jan 1 00:00:00 1970 From: Or Gerlitz Subject: Re: IB: increase DMA max_segment_size on Mellanox hardware Date: Thu, 20 Jan 2011 12:18:04 +0200 Message-ID: <4D380BDC.5080002@voltaire.com> References: <1295230184.2574.26.camel@obelisk.thedillows.org> <4D342510.80701@voltaire.com> <1295318783.3051.81.camel@obelisk.thedillows.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1295318783.3051.81.camel-1q1vX8mYZiGLUyTwlgNVppKKF0rrzTr+@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: David Dillow Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org David Dillow wrote: > The size could be 1, 2, 4, 8 MB or whatever. But if there isn't a HW > limit, then why limit yourself at all? There are others limits in the echo system this patch live with, e.g some buffer allocation and usage scheme with IB RC done by the target... IB RC message is limited by spec to 2G and with mlx4 to 1GB, what not remaining in the (say) 8MB area with this patch as well? Or. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html