From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Wei Hu (Xavier)" Subject: Re: [PATCH v5 09/21] IB/hns: Add hca support Date: Tue, 3 May 2016 16:39:45 +0800 Message-ID: <572863D1.5020700@huawei.com> References: <1461407219-72027-1-git-send-email-oulijun@huawei.com> <1461407219-72027-10-git-send-email-oulijun@huawei.com> <20160424075424.GE7974@leon.nu> <571F0C04.2010005@huawei.com> <20160426141821.GJ7974@leon.nu> <20160426142517.GA1937@nanopsycho.orion> <57203347.4000107@huawei.com> <57285A07.8090407@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Or Gerlitz Cc: oulijun , Jiri Pirko , Doug Ledford , "Hefty, Sean" , Hal Rosenstock , David Miller , Jeff Kirsher , Jiri Pirko , Or Gerlitz , linuxarm@huawei.com, "linux-rdma@vger.kernel.org" , Linux Kernel , Linux Netdev List , gongyangming@huawei.com, xiaokun@huawei.com, tangchaofei@huawei.com, haifeng.wei@huawei.com, yisen.zhuang@huawei.com, yankejian@huawei.com, lisheng011@huawei.com, charles.chenxin@huawei.com List-Id: linux-rdma@vger.kernel.org On 2016/5/3 16:14, Or Gerlitz wrote: > On Tue, May 3, 2016 at 10:57 AM, Wei Hu (Xavier) > wrote: >> On 2016/4/30 12:33, Or Gerlitz wrote: > >>> Can you elaborate what design aspects in the driver or anywhere else >>> should impose that limitation? >> 1. Oulijun resolved the problem, and sent PATCH V6 on 2016-4-28. Thanks for >> more comments. > V6 still conditions things on ARM > > >> 2. This driver for Hisilicon RoCE Engine run in ARM SoCs. >> The Hisilicon Network Subsystem is a long term evolution IP which is >> supposed to be used in Hisilicon ICT SoCs. HNS(Hisilicon Network Subsystem) >> has a hardware support of performing RDMA with RoCE engine. > I understand that the HW is targeted just for ARM environments. Is > this the reason > why you want to impose this build limitation or there's something in > the driver design > or code that is not going to work in other environments? yes. Regards Wei Hu > >> This Kconfig related with this driver as below: >> >> config INFINIBAND_HISILICON_HNS >> tristate "Hisilicon Hns ROCE Driver" >> depends on NET_VENDOR_HISILICON >> depends on ARM64 && HNS && HNS_DSAF && HNS_ENET > this is understood, my question came to better understand the limitations > > . >