On Wed, Sep 26, 2018 at 11:20:34AM +0100, Jean-Philippe Brucker wrote:
> Yes, at the moment it's difficult to guess what device drivers will
> want, but I can imagine some driver offering SVA to userspace, while
> keeping a few PASIDs for themselves to map kernel memory. Or create mdev
> devices for virtualization while also allowing bare-metal SVA. So I
> think we should aim at enabling these use-cases in parallel, even if it
> doesn't necessarily need to be possible right now.
Yeah okay, but allowing these use-cases in parallel basically disallows
giving any guest control over a device's pasid-table, no?
I am just asking because I want to make up my mind about the necessary
extensions to the IOMMU-API.
Regards,
Joerg
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