Re: [PATCH v3 3/5] iommu: Add verisilicon IOMMU driver

Jason Gunthorpe
2025-06-20T17:10:03Z

On Fri, Jun 20, 2025 at 03:52:46PM +0200, Benjamin Gaignard wrote:
> > > vsi_iommu_suspend() and vsi_iommu_resume() will also have to take the lock
> > > before calling vsi_iommu_disable() and vsi_iommu_enable().
> > Yes, if they use iommu->domain that seems good
> >
> > If the above locking is a problem then I'd use the group mutex instead
> > during resume/suspend. The attach functions are already called with
> > the group mutex held.
>
> Does group mutex is also called when using vsi_iommu_map or vsi_iommu_unmap ?

No

Jason