On 2023/10/25 01:30, Jason Gunthorpe wrote:
On Tue, Oct 24, 2023 at 02:18:10PM -0300, Jason Gunthorpe wrote:
On Tue, Oct 24, 2023 at 08:06:06AM -0700, Yi Liu wrote:
@@ -195,6 +279,10 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd)
if (pt_obj->type == IOMMUFD_OBJ_IOAS) {
On 2023/10/25 02:19, Nicolin Chen wrote:
On Tue, Oct 24, 2023 at 03:00:49PM -0300, Jason Gunthorpe wrote:
On Tue, Oct 24, 2023 at 10:50:58AM -0700, Nicolin Chen wrote:
The point is for the user_data to always be available, the driver
needs to check it if it is passed.
This should all be plumb
On Tue, Oct 24, 2023 at 03:00:49PM -0300, Jason Gunthorpe wrote:
> On Tue, Oct 24, 2023 at 10:50:58AM -0700, Nicolin Chen wrote:
>
> > > The point is for the user_data to always be available, the driver
> > > needs to check it if it is passed.
> > >
> > > This should all be plumbed to allow drive
On Tue, Oct 24, 2023 at 10:50:58AM -0700, Nicolin Chen wrote:
> > The point is for the user_data to always be available, the driver
> > needs to check it if it is passed.
> >
> > This should all be plumbed to allow drivers to also customize their
> > paging domains too.
>
> We don't have a use c
On Tue, Oct 24, 2023 at 02:31:39PM -0300, Jason Gunthorpe wrote:
> On Tue, Oct 24, 2023 at 10:28:45AM -0700, Nicolin Chen wrote:
> > On Tue, Oct 24, 2023 at 02:18:10PM -0300, Jason Gunthorpe wrote:
> > > On Tue, Oct 24, 2023 at 08:06:06AM -0700, Yi Liu wrote:
> > > > @@ -195,6 +279,10 @@ int iommuf
On Tue, Oct 24, 2023 at 08:06:06AM -0700, Yi Liu wrote:
> static inline void iommufd_hw_pagetable_put(struct iommufd_ctx *ictx,
> struct iommufd_hw_pagetable *hwpt)
> {
> - struct iommufd_hwpt_paging *hwpt_paging = to_hwpt_paging(hwpt);
> + if (WA
On Tue, Oct 24, 2023 at 10:28:45AM -0700, Nicolin Chen wrote:
> On Tue, Oct 24, 2023 at 02:18:10PM -0300, Jason Gunthorpe wrote:
> > On Tue, Oct 24, 2023 at 08:06:06AM -0700, Yi Liu wrote:
> > > @@ -195,6 +279,10 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd)
> > > if (pt_obj->type == IOMMU
On Tue, Oct 24, 2023 at 02:18:10PM -0300, Jason Gunthorpe wrote:
> On Tue, Oct 24, 2023 at 08:06:06AM -0700, Yi Liu wrote:
> > @@ -195,6 +279,10 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd)
> > if (pt_obj->type == IOMMUFD_OBJ_IOAS) {
> > struct iommufd_hwpt_paging *hwpt_pagi
On Tue, Oct 24, 2023 at 02:18:10PM -0300, Jason Gunthorpe wrote:
> On Tue, Oct 24, 2023 at 08:06:06AM -0700, Yi Liu wrote:
> > @@ -195,6 +279,10 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd)
> > if (pt_obj->type == IOMMUFD_OBJ_IOAS) {
> > struct iommufd_hwpt_paging *hwpt_pagi
On Tue, Oct 24, 2023 at 08:06:06AM -0700, Yi Liu wrote:
> @@ -195,6 +279,10 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd)
> if (pt_obj->type == IOMMUFD_OBJ_IOAS) {
> struct iommufd_hwpt_paging *hwpt_paging;
>
> + if (cmd->data_type != IOMMU_HWPT_DATA_NONE) {
On Tue, Oct 24, 2023 at 08:06:06AM -0700, Yi Liu wrote:
> +static struct iommufd_hwpt_nested *
> +iommufd_hwpt_nested_alloc(struct iommufd_ctx *ictx,
> + struct iommufd_hwpt_paging *parent,
> + struct iommufd_device *idev, u32 flags,
> +
From: Nicolin Chen
IOMMU_HWPT_ALLOC already supports iommu_domain allocation for usersapce.
But it can only allocate a hw_pagetable that associates to a given IOAS,
i.e. only a kernel-managed hw_pagetable of IOMMUFD_OBJ_HWPT_PAGING type.
IOMMU drivers can now support user-managed hw_pagetables,
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