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SubjectRe: [PATCH v4 00/17] Add VFIO mediated device support and DEV-MSI support for the idxd driver
On Sat, Oct 31, 2020 at 04:53:59PM -0700, Raj, Ashok wrote:

> If we are doing this just to improve review effectiveness, Now we would need
> some parent driver, and these sub-drivers registering seemed like a bit of
> over-engineering when these sub-drivers actually are an extension of the
> base driver and offer nothing more than extending sub-device partitions
> of IDXD for guest drivers. These look and feel like IDXD, not another device
> interface. In that sense if we move PF/VF mailboxes as
> separate drivers i thought it feels a bit odd.

You need this split anyhow, putting VFIO calls into the main idxd
module is not OK.

Plugging in a PCI device should not auto-load VFIO modules.

Jason

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