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iommu: Remove ops.pgsize_bitmap from drivers that don't use it

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These drivers all set the domain->pgsize_bitmap in their
domain_alloc_paging() functions, so the ops value is never used. Delete
it.

Reviewed-by: Sven Peter <sven@svenpeter.dev> # for Apple DART
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Tomasz Jeznach <tjeznach@rivosinc.com> # for RISC-V
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/3-v2-68a2e1ba507c+1fb-iommu_rm_ops_pgsize_jgg@nvidia.com
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Jason Gunthorpe 2025-06-09 17:41:27 -03:00 committed by Joerg Roedel
parent 35145e069e
commit 8901812485
5 changed files with 2 additions and 8 deletions
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1
drivers/iommu/apple-dart.c
View File

@ -991,7 +991,6 @@ static const struct iommu_ops apple_dart_iommu_ops = {
.of_xlate = apple_dart_of_xlate,
.def_domain_type = apple_dart_def_domain_type,
.get_resv_regions = apple_dart_get_resv_regions,
.pgsize_bitmap = -1UL, /* Restricted during dart probe */
.owner = THIS_MODULE,
.default_domain_ops = &(const struct iommu_domain_ops) {
.attach_dev = apple_dart_attach_dev_paging,

1
drivers/iommu/intel/iommu.c
View File

@ -4365,7 +4365,6 @@ const struct iommu_ops intel_iommu_ops = {
.device_group = intel_iommu_device_group,
.is_attach_deferred = intel_iommu_is_attach_deferred,
.def_domain_type = device_def_domain_type,
.pgsize_bitmap = SZ_4K,
.page_response = intel_iommu_page_response,
.default_domain_ops = &(const struct iommu_domain_ops) {
.attach_dev = intel_iommu_attach_device,

1
drivers/iommu/iommufd/selftest.c
View File

@ -801,7 +801,6 @@ static const struct iommu_ops mock_ops = {
.default_domain = &mock_blocking_domain,
.blocked_domain = &mock_blocking_domain,
.owner = THIS_MODULE,
.pgsize_bitmap = MOCK_IO_PAGE_SIZE,
.hw_info = mock_domain_hw_info,
.domain_alloc_paging_flags = mock_domain_alloc_paging_flags,
.domain_alloc_nested = mock_domain_alloc_nested,

1
drivers/iommu/riscv/iommu.c
View File

@ -1533,7 +1533,6 @@ static void riscv_iommu_release_device(struct device *dev)
}
static const struct iommu_ops riscv_iommu_ops = {
.pgsize_bitmap = SZ_4K,
.of_xlate = riscv_iommu_of_xlate,
.identity_domain = &riscv_iommu_identity_domain,
.blocked_domain = &riscv_iommu_blocking_domain,

6
drivers/iommu/virtio-iommu.c
View File

@ -998,7 +998,7 @@ static void viommu_get_resv_regions(struct device *dev, struct list_head *head)
iommu_dma_get_resv_regions(dev, head);
}
static struct iommu_ops viommu_ops;
static const struct iommu_ops viommu_ops;
static struct virtio_driver virtio_iommu_drv;
static int viommu_match_node(struct device *dev, const void *data)
@ -1086,7 +1086,7 @@ static bool viommu_capable(struct device *dev, enum iommu_cap cap)
}
}
static struct iommu_ops viommu_ops = {
static const struct iommu_ops viommu_ops = {
.capable = viommu_capable,
.domain_alloc_identity = viommu_domain_alloc_identity,
.domain_alloc_paging = viommu_domain_alloc_paging,
@ -1217,8 +1217,6 @@ static int viommu_probe(struct virtio_device *vdev)
viommu->first_domain++;
}
viommu_ops.pgsize_bitmap = viommu->pgsize_bitmap;
virtio_device_ready(vdev);
/* Populate the event queue with buffers */