Re: [SPDK] [PATCH v2] igb_uio: issue FLR during open and release of device file

Re: [SPDK] [PATCH v2] igb_uio: issue FLR during open and release of device file

[Gregory Etelson]

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Hello Shijith,

Please add the patch to uio_pci_generic.c file in Linux kernel
We experience similar faults with NVMe devices  

On Wednesday, 12 July 2017 06:40:55 IDT Tan, Jianfeng wrote:
> 
> > -----Original Message-----
> > From: Shijith Thotton [mailto:shijith.thotton(a)caviumnetworks.com]
> > Sent: Friday, July 7, 2017 7:14 PM
> > To: dev(a)dpdk.org
> > Cc: Yigit, Ferruh; Gregory Etelson; Thomas Monjalon; Stephen Hemminger;
> > Tan, Jianfeng; Lu, Wenzhuo
> > Subject: [PATCH v2] igb_uio: issue FLR during open and release of device file
> > 
> > Set UIO info device file operations open and release. Call pci reset
> > function inside open and release to clear device state at start and end.
> > Copied this behaviour from vfio_pci kernel module code. With this patch,
> > it is not mandatory to issue FLR by PMD's during init and close.
> > 
> > Bus master enable and disable are added in open and release respectively
> > to take care of device DMA.
> > 
> > Signed-off-by: Shijith Thotton <shijith.thotton(a)caviumnetworks.com>
> 
> Reviewed-by: Jianfeng Tan <jianfeng.tan(a)intel.com>


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