On 2022/5/12 19:51, Jason Gunthorpe wrote:
On Thu, May 12, 2022 at 08:00:59AM +0100, Jean-Philippe Brucker wrote:
It is not "missing" it is just renamed to blocking_domain->ops->set_dev_pasid()
The implementation of that function would be identical to
detach_dev_pasid.
attach(dev, pasid,
On Thu, May 12, 2022 at 08:00:59AM +0100, Jean-Philippe Brucker wrote:
> > It is not "missing" it is just renamed to
> > blocking_domain->ops->set_dev_pasid()
> >
> > The implementation of that function would be identical to
> > detach_dev_pasid.
>
> attach(dev, pasid, sva_domain)
>
On Wed, May 11, 2022 at 09:02:40AM -0300, Jason Gunthorpe wrote:
> On Wed, May 11, 2022 at 08:54:39AM +0100, Jean-Philippe Brucker wrote:
> > > > > Then 'detach pasid' is:
> > > > >
> > > > > iommu_ops->blocking_domain->ops->attach_dev_pasid(domain, dev,
> > > > pasid);
> > > > >
> > > > > And we
On Wed, May 11, 2022 at 08:54:39AM +0100, Jean-Philippe Brucker wrote:
> > > > Then 'detach pasid' is:
> > > >
> > > > iommu_ops->blocking_domain->ops->attach_dev_pasid(domain, dev,
> > > pasid);
> > > >
> > > > And we move away from the notion of 'detach' and in the direction that
> > > >
On Wed, May 11, 2022 at 04:09:14AM +, Tian, Kevin wrote:
> > From: Baolu Lu
> > Sent: Wednesday, May 11, 2022 10:32 AM
> >
> > On 2022/5/10 22:02, Jason Gunthorpe wrote:
> > > On Tue, May 10, 2022 at 02:17:29PM +0800, Lu Baolu wrote:
> > >
> > >> This adds a pair of common domain ops for
> From: Baolu Lu
> Sent: Wednesday, May 11, 2022 10:32 AM
>
> On 2022/5/10 22:02, Jason Gunthorpe wrote:
> > On Tue, May 10, 2022 at 02:17:29PM +0800, Lu Baolu wrote:
> >
> >> This adds a pair of common domain ops for this purpose and adds
> helpers
> >> to attach/detach a domain to/from a
On 2022/5/10 22:02, Jason Gunthorpe wrote:
On Tue, May 10, 2022 at 02:17:29PM +0800, Lu Baolu wrote:
This adds a pair of common domain ops for this purpose and adds helpers
to attach/detach a domain to/from a {device, PASID}.
I wonder if this should not have a detach op - after discussing
On Tue, May 10, 2022 at 02:17:29PM +0800, Lu Baolu wrote:
> This adds a pair of common domain ops for this purpose and adds helpers
> to attach/detach a domain to/from a {device, PASID}.
I wonder if this should not have a detach op - after discussing with
Robin we can see that detach_dev is not
Attaching an IOMMU domain to a PASID of a device is a generic operation
for modern IOMMU drivers which support PASID-granular DMA address
translation. Currently visible usage scenarios include (but not limited):
- SVA (Shared Virtual Address)
- kernel DMA with PASID
- hardware-assist mediated
