On 2019/11/19 下午8:40, Jason Gunthorpe wrote:
On Tue, Nov 19, 2019 at 11:03:39AM +0800, Jason Wang wrote:
Also, see the other conversations we are having about a "virtual" bus
and devices. I do not want to have two different ways of doing the same
thing in the kernel at the same time please. Please work together with
the Intel developers to solve this in a unified way, as you both
need/want the same thing here.
Sure, some functions looks similar, but the "virtual" bus does not contain a
management interface and it's not clear that how it can be used by userspace
driver. For this series, sysfs/GUID based management interface is reused and
we had a concrete example of how it would be used by userspace driver[1] and
a real hardware driver implementation[2].
The lifecycle stuff should be re-used through a library of this guid
stuff, not by 'subclassing' mdev_device
Jason
But mdev provides more than lifecycle management: type management, IOMMU
support etc. And more could be added in the future.
Having a library that serves exactly for the case of mdev seems less
convenient than making mdev_device a 'parent class'.
Thanks
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