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| author | Joao Martins <joao.m.martins@oracle.com> | 2023-10-24 16:50:57 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-10-24 17:58:43 +0300 |
| commit | e2a4b294784957fc28ecb1fed8a7e69da18eb18d (patch) | |
| tree | 17108b4962b49f0b6f385f18ac768cd32c7c7cb1 /drivers/iommu/iommufd/iommufd_private.h | |
| parent | 5f9bdbf4c65860cc8b9c544d92bfd76fbea8d9c5 (diff) | |
| download | linux-e2a4b294784957fc28ecb1fed8a7e69da18eb18d.tar.xz | |
iommufd: Add IOMMU_HWPT_SET_DIRTY_TRACKING
Every IOMMU driver should be able to implement the needed iommu domain ops
to control dirty tracking.
Connect a hw_pagetable to the IOMMU core dirty tracking ops, specifically
the ability to enable/disable dirty tracking on an IOMMU domain
(hw_pagetable id). To that end add an io_pagetable kernel API to toggle
dirty tracking:
* iopt_set_dirty_tracking(iopt, [domain], state)
The intended caller of this is via the hw_pagetable object that is created.
Internally it will ensure the leftover dirty state is cleared /right
before/ dirty tracking starts. This is also useful for iommu drivers which
may decide that dirty tracking is always-enabled at boot without wanting to
toggle dynamically via corresponding iommu domain op.
Link: https://lore.kernel.org/r/20231024135109.73787-7-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/iommu/iommufd/iommufd_private.h')
| -rw-r--r-- | drivers/iommu/iommufd/iommufd_private.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/iommu/iommufd/iommufd_private.h b/drivers/iommu/iommufd/iommufd_private.h index 3064997a0181..b09750848da6 100644 --- a/drivers/iommu/iommufd/iommufd_private.h +++ b/drivers/iommu/iommufd/iommufd_private.h @@ -8,6 +8,7 @@ #include <linux/xarray.h> #include <linux/refcount.h> #include <linux/uaccess.h> +#include <uapi/linux/iommufd.h> struct iommu_domain; struct iommu_group; @@ -70,6 +71,9 @@ int iopt_unmap_iova(struct io_pagetable *iopt, unsigned long iova, unsigned long length, unsigned long *unmapped); int iopt_unmap_all(struct io_pagetable *iopt, unsigned long *unmapped); +int iopt_set_dirty_tracking(struct io_pagetable *iopt, + struct iommu_domain *domain, bool enable); + void iommufd_access_notify_unmap(struct io_pagetable *iopt, unsigned long iova, unsigned long length); int iopt_table_add_domain(struct io_pagetable *iopt, @@ -240,6 +244,14 @@ struct iommufd_hw_pagetable { struct list_head hwpt_item; }; +static inline struct iommufd_hw_pagetable * +iommufd_get_hwpt(struct iommufd_ucmd *ucmd, u32 id) +{ + return container_of(iommufd_get_object(ucmd->ictx, id, + IOMMUFD_OBJ_HW_PAGETABLE), + struct iommufd_hw_pagetable, obj); +} +int iommufd_hwpt_set_dirty_tracking(struct iommufd_ucmd *ucmd); struct iommufd_hw_pagetable * iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas, struct iommufd_device *idev, u32 flags, |