Re: summary of current vfio mdev upstreaming status

[Neo Jia <cjia@nvidia.com>]

On Thu, Sep 29, 2016 at 04:55:39PM +0800, Jike Song wrote:
> Hi all,
> 
> In order to have a clear understanding about the VFIO mdev upstreaming
> status, I'd like to summarize it. Please share your opinions on this,
> and correct my misunderstandings.
> 
> The whole vfio mdev series can be logically divided into several parts,
> they work together to provide the mdev support.

Hi Jike,

Thanks for summarizing this, but I will defer to Kirti to comment on the actual
upstream status of her patches, couples things to note though:

1) iommu type1 patches have been extensively reviewed by Alex already and we
have one action item left to implement which is already queued up in v8 patchset.

2) regarding the sysfs interface and libvirt discussion, I would like to hear
what kind of attributes Intel folks are having so far as Daniel is
asking about adding a class "gpu" which will pull several attributes as mandatory.

Thanks,
Neo

> 
> 
> 
> PART 1: mdev core driver
> 
> 	[task]
> 		-	the mdev bus/device support
> 		-	the utilities of mdev lifecycle management
> 		-	the physical device register/unregister interfaces
> 
> 	[status]
> 		-	basically agreed by community
> 
> 
> PART 2: vfio bus driver for mdev
> 
> 	[task]
> 		-	interfaces with vendor drivers
> 		-	the vfio bus implementation
> 
> 	[status]
> 
> 		-	basically agreed by community
> 
> 
> PART 3: iommu support for mdev
> 
> 	[task]
> 		-	iommu support for mdev
> 
> 	[status]
> 		-	Kirti's v7 implementation, not yet fully reviewed
> 
> 
> PART 4: sysfs interfaces for mdev
> 
> 	[task]
> 		-	define the hierarchy of minimal sysfs directories/files
> 		-	check the validity from vendor drivers, init/de-init them
> 	[status]
> 		-	interfaces are in discussion
> 
> 
> PART 6: Documentation
> 
> 	[task]
> 		-	clearly document the architecture and interfaces
> 		-	coding example for vendor drivers
> 
> 	[status]
> 		-	N/A
> 
> 
> What I'm curious here is 'PART 4', which is needed by other parts to
> perform further steps, is it possible to accelerate the process somehow? :-)
> 
> 
> --
> Thanks,
> Jike
> --
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