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iommufd: Flow user flags for domain allocation to domain_alloc_user()

Browse Source 
Extends iommufd_hw_pagetable_alloc() to accept user flags, the uAPI will
provide the flags.

Link: https://lore.kernel.org/r/20230928071528.26258-4-yi.l.liu@intel.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Yi Liu 2023-09-28 00:15:25 -07:00 committed by Jason Gunthorpe
parent 7975b72208
commit 89d63875d8
3 changed files with 9 additions and 5 deletions
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2
drivers/iommu/iommufd/device.c
View File

@ -540,7 +540,7 @@ iommufd_device_auto_get_domain(struct iommufd_device *idev,
}
hwpt = iommufd_hw_pagetable_alloc(idev->ictx, ioas, idev,
immediate_attach);
0, immediate_attach);
if (IS_ERR(hwpt)) {
destroy_hwpt = ERR_CAST(hwpt);
goto out_unlock;

9
drivers/iommu/iommufd/hw_pagetable.c
View File

@ -61,6 +61,7 @@ int iommufd_hw_pagetable_enforce_cc(struct iommufd_hw_pagetable *hwpt)
* @ictx: iommufd context
* @ioas: IOAS to associate the domain with
* @idev: Device to get an iommu_domain for
* @flags: Flags from userspace
* @immediate_attach: True if idev should be attached to the hwpt
*
* Allocate a new iommu_domain and return it as a hw_pagetable. The HWPT
@ -73,7 +74,8 @@ int iommufd_hw_pagetable_enforce_cc(struct iommufd_hw_pagetable *hwpt)
*/
struct iommufd_hw_pagetable *
iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas,
struct iommufd_device *idev, bool immediate_attach)
struct iommufd_device *idev, u32 flags,
bool immediate_attach)
{
const struct iommu_ops *ops = dev_iommu_ops(idev->dev);
struct iommufd_hw_pagetable *hwpt;
@ -91,7 +93,7 @@ iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas,
hwpt->ioas = ioas;
if (ops->domain_alloc_user) {
hwpt->domain = ops->domain_alloc_user(idev->dev, 0);
hwpt->domain = ops->domain_alloc_user(idev->dev, flags);
if (IS_ERR(hwpt->domain)) {
rc = PTR_ERR(hwpt->domain);
hwpt->domain = NULL;
@ -166,7 +168,8 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd)
}
mutex_lock(&ioas->mutex);
hwpt = iommufd_hw_pagetable_alloc(ucmd->ictx, ioas, idev, false);
hwpt = iommufd_hw_pagetable_alloc(ucmd->ictx, ioas,
idev, cmd->flags, false);
if (IS_ERR(hwpt)) {
rc = PTR_ERR(hwpt);
goto out_unlock;

3
drivers/iommu/iommufd/iommufd_private.h
View File

@ -242,7 +242,8 @@ struct iommufd_hw_pagetable {
struct iommufd_hw_pagetable *
iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas,
struct iommufd_device *idev, bool immediate_attach);
struct iommufd_device *idev, u32 flags,
bool immediate_attach);
int iommufd_hw_pagetable_enforce_cc(struct iommufd_hw_pagetable *hwpt);
int iommufd_hw_pagetable_attach(struct iommufd_hw_pagetable *hwpt,
struct iommufd_device *idev);