From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dennis Dalessandro Subject: Re: [RFC] Proposal to address hfi1 UI and EPROM devices Date: Tue, 3 May 2016 12:54:05 -0400 Message-ID: <20160503165403.GA11903@phlsvsds.ph.intel.com> References: <20160502195502.GA31800@phlsvsds.ph.intel.com> <20160503162457.GB29160@leon.nu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Return-path: Content-Disposition: inline In-Reply-To: <20160503162457.GB29160-2ukJVAZIZ/Y@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Leon Romanovsky Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org, mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, dean.luick-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, mitko.haralanov-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, jubin.john-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org List-Id: linux-rdma@vger.kernel.org On Tue, May 03, 2016 at 07:24:57PM +0300, Leon Romanovsky wrote: >On Mon, May 02, 2016 at 03:55:02PM -0400, Dennis Dalessandro wrote: >> We also should be able to use any of these schemes to handle our eprom >> reading/writing. Adding eprom to IPoIB as Doug suggested is a fine plan, but >> we technically don't need to do it right now when we could make do with the >> "UI" functionality and hide the details in user space. In the future there >> may well be value in having an eprom capability in the rdma sub-system, but >> for now we believe we can avoid extending the kernel in this regard. > >Just to understand better your RFC. Are you asking from the community >excuse do not implement core functionality just because you don't need >it? Am I right? The purpose of the RFC is to get the community's feedback on our plans to solve our UI/EPROM issue. The paragraphs [1] not snipped in your response focus on that. It comes down to: Use resource0 which does not support locking vs use a file in /sys/kernel/debug. The point of the particular paragraph you are questioning is that I don't think we should add more code and complexity to the kernel for something that is not needed. [1] http://marc.info/?l=linux-rdma&m=146221891012428&w=2 -Denny -- 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