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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2024-02-12 04:22:19 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-02-16 17:19:27 +0300 |
| commit | 24b5d268b5ab95c12b5ae58a054d04bfa442f58f (patch) | |
| tree | e867e8523b32cb7fd9442de4d370bf06353cf7ee /include/linux/iommu.h | |
| parent | 3f02a9dc70007c0e6299fda9c4f7a1e2277ec3d2 (diff) | |
| download | linux-24b5d268b5ab95c12b5ae58a054d04bfa442f58f.tar.xz | |
iommu: Prepare for separating SVA and IOPF
Move iopf_group data structure to iommu.h to make it a minimal set of
faults that a domain's page fault handler should handle.
Add a new function, iopf_free_group(), to free a fault group after all
faults in the group are handled. This function will be made global so
that it can be called from other files, such as iommu-sva.c.
Move iopf_queue data structure to iommu.h to allow the workqueue to be
scheduled out of this file.
This will simplify the sequential patches.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Tested-by: Yan Zhao <yan.y.zhao@intel.com>
Tested-by: Longfang Liu <liulongfang@huawei.com>
Link: https://lore.kernel.org/r/20240212012227.119381-9-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 2320548a90f8..c9d4f175f121 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -41,7 +41,6 @@ struct iommu_dirty_ops; struct notifier_block; struct iommu_sva; struct iommu_dma_cookie; -struct iopf_queue; #define IOMMU_FAULT_PERM_READ (1 << 0) /* read */ #define IOMMU_FAULT_PERM_WRITE (1 << 1) /* write */ @@ -126,6 +125,25 @@ struct iopf_fault { struct list_head list; }; +struct iopf_group { + struct iopf_fault last_fault; + struct list_head faults; + struct work_struct work; + struct device *dev; +}; + +/** + * struct iopf_queue - IO Page Fault queue + * @wq: the fault workqueue + * @devices: devices attached to this queue + * @lock: protects the device list + */ +struct iopf_queue { + struct workqueue_struct *wq; + struct list_head devices; + struct mutex lock; +}; + /* iommu fault flags */ #define IOMMU_FAULT_READ 0x0 #define IOMMU_FAULT_WRITE 0x1 |