On Mon, Oct 07, 2024 at 03:28:16PM -0300, Jason Gunthorpe wrote:
> On Mon, Oct 07, 2024 at 10:25:01AM -0700, Nicolin Chen wrote:
>
> > This is for vdev/dev v.s. hwpt. We need the lock for viommu's
> > vdev xarray.
> >
> > Yet, giving a 2nd thought, I feel the lock would be useless if
> > a driver
On Mon, Oct 07, 2024 at 10:25:01AM -0700, Nicolin Chen wrote:
> This is for vdev/dev v.s. hwpt. We need the lock for viommu's
> vdev xarray.
>
> Yet, giving a 2nd thought, I feel the lock would be useless if
> a driver tries to refer the returned vdev (with this helper)
> after the vdev object is
On Mon, Oct 07, 2024 at 02:11:19PM -0300, Jason Gunthorpe wrote:
> On Mon, Oct 07, 2024 at 09:36:18AM -0700, Nicolin Chen wrote:
> > On Mon, Oct 07, 2024 at 12:38:37PM -0300, Jason Gunthorpe wrote:
> > > On Fri, Oct 04, 2024 at 10:19:43PM -0700, Nicolin Chen wrote:
> > > > I tried exposing the stru
On Mon, Oct 07, 2024 at 09:36:18AM -0700, Nicolin Chen wrote:
> On Mon, Oct 07, 2024 at 12:38:37PM -0300, Jason Gunthorpe wrote:
> > On Fri, Oct 04, 2024 at 10:19:43PM -0700, Nicolin Chen wrote:
> > > I tried exposing the struct iommufd_viommu to drivers, and was
> > > able to drop a couple of help
On Mon, Oct 07, 2024 at 12:38:37PM -0300, Jason Gunthorpe wrote:
> On Fri, Oct 04, 2024 at 10:19:43PM -0700, Nicolin Chen wrote:
> > I tried exposing the struct iommufd_viommu to drivers, and was
> > able to drop a couple of helpers, except these two:
> >
> > struct device *vdev_to_dev(struct iomm
On Fri, Oct 04, 2024 at 10:19:43PM -0700, Nicolin Chen wrote:
> I tried exposing the struct iommufd_viommu to drivers, and was
> able to drop a couple of helpers, except these two:
>
> struct device *vdev_to_dev(struct iommufd_vdevice *vdev)
> {
> return vdev ? vdev->idev->dev : NULL;
> } //
On Wed, Sep 11, 2024 at 08:17:22PM -0700, Nicolin Chen wrote:
> On Wed, Sep 11, 2024 at 08:11:03PM -0300, Jason Gunthorpe wrote:
> > On Thu, Sep 05, 2024 at 10:53:31AM -0700, Nicolin Chen wrote:
> > > On Thu, Sep 05, 2024 at 01:14:15PM -0300, Jason Gunthorpe wrote:
> > > > On Tue, Aug 27, 2024 at 0
On Wed, Sep 11, 2024 at 08:11:03PM -0300, Jason Gunthorpe wrote:
> On Thu, Sep 05, 2024 at 10:53:31AM -0700, Nicolin Chen wrote:
> > On Thu, Sep 05, 2024 at 01:14:15PM -0300, Jason Gunthorpe wrote:
> > > On Tue, Aug 27, 2024 at 09:59:47AM -0700, Nicolin Chen wrote:
> > > > Driver can call the iommu
On Thu, Sep 05, 2024 at 10:53:31AM -0700, Nicolin Chen wrote:
> On Thu, Sep 05, 2024 at 01:14:15PM -0300, Jason Gunthorpe wrote:
> > On Tue, Aug 27, 2024 at 09:59:47AM -0700, Nicolin Chen wrote:
> > > Driver can call the iommufd_viommu_find_device() to find a device pointer
> > > using its per-viom
On Thu, Sep 05, 2024 at 01:14:15PM -0300, Jason Gunthorpe wrote:
> On Tue, Aug 27, 2024 at 09:59:47AM -0700, Nicolin Chen wrote:
> > Driver can call the iommufd_viommu_find_device() to find a device pointer
> > using its per-viommu virtual ID. The returned device must be protected by
> > the pair o
On Tue, Aug 27, 2024 at 09:59:47AM -0700, Nicolin Chen wrote:
> Driver can call the iommufd_viommu_find_device() to find a device pointer
> using its per-viommu virtual ID. The returned device must be protected by
> the pair of iommufd_viommu_lock/unlock_vdev_id() function.
>
> Put these three fun
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