> -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Doug Ledford > Sent: Friday, July 24, 2015 9:45 AM > To: Steve Wise > Cc: [email protected] > Subject: Re: [PATCH] RDMA/cxgb3: fail get_dma_mr if the memory footprint can > exceed 32b > > On 07/23/2015 06:47 PM, Steve Wise wrote: > >> -----Original Message----- From: Doug Ledford > >> Should this be a static check of the pointer size versus installed > >> memory? Would it be possible to have this work for machines with > >> less than 4GB of physical memory even if they have 64bit pointers, > >> or are you concerned that hotplug memory could take us over the > >> limit after registration and cause problems? > > > > NFSRDMA doesn't need dma-mrs for T3 since it has FRMR + local dma > > lkey support. And since the deficiency really can cause problems on > > 64b systems if the memory grows > 4GB after dma-mr allocation, I > > decided to just not allow them for potential large memory systems. > > Ok. I've pulled this for 4.2-rc then. >
The problem has been there since day one, so it doesn't represent a regression. It is your call, but I think 4.3 is fine. Thanks, Steve. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
