From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Wise Subject: Re: Fw: general protection fault Date: Thu, 18 Mar 2010 09:07:03 -0500 Message-ID: <4BA23387.80609@opengridcomputing.com> References: <201003181055542343477@inspur.com> Mime-Version: 1.0 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <201003181055542343477-6gUaA8visnnQT0dZR+AlfA@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: lihaidong Cc: linux-rdma List-Id: linux-rdma@vger.kernel.org Without more info, I cannot help much. Are you calling it in a save context? You probably cannot call it from an interrupt context. Was there a stack trace? lihaidong wrote: > Hi, Steve > Could you help me with this case. > The server has 16GB memory,linux-2.6.29, OFED-1.5 > When using ib_dma_map_single, it report GFP error. I saw that krping > use dma_map_single directly. > >Hi=A3=BA > >Sorry to bother you. > >I don't know who you are, I saw you email address in linux-rdma mail > archive since I met the same problem as you met in July, 3th, 2009. > >Just like your email said > >"when I am trying to map allocated memory for DMA, I get GPF: > >general protection fault: 0000 [1] SMP > >. > >. > >. > >" > >I saw no comments on your email. So Did you get over this problem? I= f > so, could you give me some tips , please? > > > >Thanks. > > > 2010-03-17 > ---------------------------------------------------------------------= --- > lihaidong -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" i= n the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html