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SubjectRe: [PATCH] vhost: introduce vDPA based backend
On Wed, Feb 05, 2020 at 03:50:14PM +0800, Jason Wang wrote:
> > Would it be better for the map/umnap logic to happen inside each device ?
> > Devices that needs the IOMMU will call iommu APIs from inside the driver callback.
>
> Technically, this can work. But if it can be done by vhost-vpda it will make
> the vDPA driver more compact and easier to be implemented.

Generally speaking, in the kernel, it is normal to not hoist code of
out drivers into subsystems until 2-3 drivers are duplicating that
code. It helps ensure the right design is used

Jason

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