Re: [PATCH v6 0/5] vfio: handle DMA map/unmap up to the addressable limit

[David Matlack]

On Fri, Nov 7, 2025 at 4:36 PM Alex Mastro <amastro@xxxxxx> wrote:
>
> On Fri, Nov 07, 2025 at 10:24:27PM +0000, David Matlack wrote:
> > On 2025-11-07 12:44 AM, David Matlack wrote:
> > > On 2025-10-28 09:14 AM, Alex Mastro wrote:
> > For type1, I tracked down -EINVAL as coming from
> > vfio_iommu_iova_dma_valid() returning false.
> >
> > The system I tested on only supports IOVAs up through
> > 0x00ffffffffffffff.
> >
> > Do you know what systems supports up to 0xffffffffffffffff? I would like
> > to try to make sure I am getting test coverage there when running these
> > tests.
>
> I observed this on an AMD EPYC 9654 server.

Thanks. I was able to find a similar server to that that supports iova
0xffffffffffffffff and have added that to my test workflow.