On Mon, Oct 25, 2021 at 08:36:02PM -0300, Jason Gunthorpe wrote:
> On Tue, Oct 26, 2021 at 12:16:43AM +1100, David Gibson wrote:
> > If you attach devices A and B (both in group X) to IOAS 1, then detach
> > device A, what happens? Do you detach both devices? Or do you have a
> > counter so you
On Tue, Oct 26, 2021 at 12:16:43AM +1100, David Gibson wrote:
> If you attach devices A and B (both in group X) to IOAS 1, then detach
> device A, what happens? Do you detach both devices? Or do you have a
> counter so you have to detach as many time as you attached?
I would refcount it since
On Mon, Oct 25, 2021 at 09:14:10AM -0300, Jason Gunthorpe wrote:
> On Mon, Oct 25, 2021 at 04:14:56PM +1100, David Gibson wrote:
> > On Mon, Oct 18, 2021 at 01:32:38PM -0300, Jason Gunthorpe wrote:
> > > On Mon, Oct 18, 2021 at 02:57:12PM +1100, David Gibson wrote:
> > >
> > > > The first user
On Mon, Oct 25, 2021 at 04:14:56PM +1100, David Gibson wrote:
> On Mon, Oct 18, 2021 at 01:32:38PM -0300, Jason Gunthorpe wrote:
> > On Mon, Oct 18, 2021 at 02:57:12PM +1100, David Gibson wrote:
> >
> > > The first user might read this. Subsequent users are likely to just
> > > copy paste
On Mon, Oct 18, 2021 at 01:32:38PM -0300, Jason Gunthorpe wrote:
> On Mon, Oct 18, 2021 at 02:57:12PM +1100, David Gibson wrote:
>
> > The first user might read this. Subsequent users are likely to just
> > copy paste examples from earlier things without fully understanding
> > them. In general
On Mon, Oct 18, 2021 at 02:57:12PM +1100, David Gibson wrote:
> The first user might read this. Subsequent users are likely to just
> copy paste examples from earlier things without fully understanding
> them. In general documenting restrictions somewhere is never as
> effective as making those
On Thu, Oct 14, 2021 at 07:06:07AM +, Tian, Kevin wrote:
> > From: David Gibson
> > Sent: Thursday, October 14, 2021 1:24 PM
> >
> > On Sun, Sep 19, 2021 at 02:38:41PM +0800, Liu Yi L wrote:
> > > From: Lu Baolu
> > >
> > > These two helpers could be used when 1) the iommu group is
> From: David Gibson
> Sent: Thursday, October 14, 2021 1:24 PM
>
> On Sun, Sep 19, 2021 at 02:38:41PM +0800, Liu Yi L wrote:
> > From: Lu Baolu
> >
> > These two helpers could be used when 1) the iommu group is singleton,
> > or 2) the upper layer has put the iommu group into the secure state
On Sun, Sep 19, 2021 at 02:38:41PM +0800, Liu Yi L wrote:
> From: Lu Baolu
>
> These two helpers could be used when 1) the iommu group is singleton,
> or 2) the upper layer has put the iommu group into the secure state by
> calling iommu_device_init_user_dma().
>
> As we want the iommufd design
