Re: [PATCH v3 5/5] pci: Suspend iommu function prior to resetting a device

Jason Gunthorpe
2025-08-28T12:51:58Z

On Fri, Aug 22, 2025 at 11:50:58AM -0700, Nicolin Chen wrote:

> It feels like we need a no-fail re-attach operation, or at least an
> unlikely-to-fail one. I recall years ago we tried a can_attach op
> to test the compatibility but it didn't get merged. Maybe we'd need
> it so that a concurrent attach can test compatibility, allowing the
> re-attach in iommu_dev_reset_done() to more likely succeed.

This is probably the cleanest option to split these things

Jason