Re: [PATCH v4 13/21] iommu/riscv: Preserve MSI IOVA state across domain replacement

[Jason Gunthorpe]

On Thu, Aug 20, 2026 at 11:41:42PM +0200, Andrew Jones wrote:
> MSI IOVAs belong to a paging domain, but iommufd may replace a device's
> domain while its interrupts remain allocated. Waiting for another IRQ
> allocation to populate the new table would leave existing interrupts
> without valid MSI IOVAs.

???

iommufd is supposed to handle all of this itself, that is what commit
40f5175d0eb7 ("iommufd: Implement sw_msi support natively")

is doing?

The whole point of that commit was so drivers don't have to deal with
this at all.

Jason