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iommufd/selftest: Drop parent domain from mock_iommu_domain_nested

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There is no use of this parent domain. Delete the dead code.

Note that the s2_parent in struct mock_viommu will be a deadcode too. Yet,
keep it because it will be soon used by HW queue objects, i.e. no point in
adding it back and forth in such a short window. Besides, keeping it could
cover the majority of vIOMMU use cases where a driver-level structure will
be larger in size than the core structure.

Link: https://patch.msgid.link/r/0f155a7cd71034a498448fe4828fb4aaacdabf95.1749882255.git.nicolinc@nvidia.com
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Nicolin Chen 2025-06-13 23:35:20 -07:00 committed by Jason Gunthorpe
parent 63141fa741
commit 5983d1e7d7
1 changed files with 0 additions and 3 deletions
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3
drivers/iommu/iommufd/selftest.c
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@ -138,7 +138,6 @@ to_mock_domain(struct iommu_domain *domain)
struct mock_iommu_domain_nested {
struct iommu_domain domain;
struct mock_viommu *mock_viommu;
struct mock_iommu_domain *parent;
u32 iotlb[MOCK_NESTED_DOMAIN_IOTLB_NUM];
};
@ -434,7 +433,6 @@ mock_domain_alloc_nested(struct device *dev, struct iommu_domain *parent,
mock_nested = __mock_domain_alloc_nested(user_data);
if (IS_ERR(mock_nested))
return ERR_CAST(mock_nested);
mock_nested->parent = mock_parent;
return &mock_nested->domain;
}
@ -692,7 +690,6 @@ mock_viommu_alloc_domain_nested(struct iommufd_viommu *viommu, u32 flags,
if (IS_ERR(mock_nested))
return ERR_CAST(mock_nested);
mock_nested->mock_viommu = mock_viommu;
mock_nested->parent = mock_viommu->s2_parent;
return &mock_nested->domain;
}