[dpdk-dev] [dpdk-users] IGB_UIO: PCI Resources Management

[Tan, Jianfeng]

> -----Original Message-----
> From: users [mailto:users-bounces at dpdk.org] On Behalf Of Ferruh Yigit
> Sent: Thursday, January 12, 2017 8:22 PM
> To: Alejandro Lucero
> Cc: Gregory Etelson; dev; users at dpdk.org
> Subject: Re: [dpdk-users] [dpdk-dev] IGB_UIO: PCI Resources Management
> 
> On 1/12/2017 12:12 PM, Alejandro Lucero wrote:
> >
> >
> > On Thu, Jan 12, 2017 at 11:55 AM, Ferruh Yigit <ferruh.yigit at intel.com
> > <mailto:ferruh.yigit at intel.com>> wrote:
> >
> >     On 12/9/2016 8:54 AM, Gregory Etelson wrote:
> >     > Hello,
> >     >
> >     > IGB_UIO driver does not close port PCI activities after DPDK process
> exits.
> >     > DPDK API provides rte_eth_dev_close() to manage port PCI,
> >     > but it can be skipped if process receives SIGKILL signal
> >
> >     I guess I understand the problem.
> >
> >
> > This is a known problem, but it is not just a UIO problem, and this
> > patch does not solve it, maybe it just solves part of it.
> >
> > In fact, a DPDK program crashing could imply the NIC DMAing after that
> > and after that memory was assigned to another program.
> 
> Yes.
> Can there be a way to stop NIC DMA, (or prevent it access to mem
> anymore) when app crashes?
> I think that is what this patch is looking for.

If I understand it correctly, you are looking for this patch?
http://dpdk.org/dev/patchwork/patch/17495/