From mboxrd@z Thu Jan 1 00:00:00 1970 From: Romulo Goncalves Subject: Re: Support for Memory windows. Date: Thu, 18 Nov 2010 13:45:19 +0100 Message-ID: <4CE51FDF.10705@cwi.nl> References: <4CE14C82.9020907@cwi.nl> <4CE280BD.8080505@mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4CE280BD.8080505-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Tziporet Koren Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org On 16/11/10 14:01, Tziporet Koren wrote: > On 11/15/2010 5:06 PM, Romulo Goncalves wrote: >> Hello, >> >> For my PhD project I have been using RDMA over inifiniband. >> Until now I have used memory regions, but now I would like to also >> define memory windows. >> >> The steps taken are the following ones: >> Register a memory region. >> Alloc a window >> bind the window to the registered memory region. >> >> The memory region registration worked as expected, however, the call >> of the function to alloc the memory window did not. >> It seems there is not an implementation for the functions to alloc, >> bind, and dealloc a memory window. >> >> I looked into verbs.h and I found the reference to the functions in >> the context_ops: >> >> struct ibv_context_ops { >> .... >> struct ibv_mw * (*alloc_mw)(struct ibv_pd *pd, enum >> ibv_mw_type type); >> int (*bind_mw)(struct ibv_qp *qp, struct >> ibv_mw *mw, struct ibv_mw_bind *mw_bind); >> int (*dealloc_mw)(struct ibv_mw *mw); >> .... >> } >> >> However, I do not see their declaration or implementation anywhere else. >> Could be the version of my openfabrics does not support memory windows? >> > Memory Windows have not been implemented > > Tziporet That's bad news for me. Is there any plans to implement it in a near future? Romulo -- 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