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SubjectRe: [PATCH v3] swiotlb: Adjust SWIOTBL bounce buffer size for SEV guests.
On Thu, Nov 05, 2020 at 02:06:49PM -0500, Konrad Rzeszutek Wilk wrote:
> .
> > > Right, so I am wondering if we can do this better.
> > >
> > > That is you are never going to get any 32-bit devices with SEV right? That
> > > is there is nothing that bounds you to always use the memory below 4GB?
> > >
> >
> > We do support 32-bit PCIe passthrough devices with SEV.
>
> Ewww.. Which devices would this be?

There is still some new broken shit like that that keeps appearing.
GPU is pretty famouts for supporting less than 64-bit addressing,
even if it isn't all the way down to 32-bit.

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