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iommu: Drop iommu_group_replace_domain()

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iommufd does not use it now, so drop it.

Link: https://patch.msgid.link/r/20250226011849.5102-3-yi.l.liu@intel.com
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.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
2025-02-25 17:18:47 -08:00
committed by Jason Gunthorpe
parent 237603a46a
commit 473ec072a6
2 changed files with 6 additions and 32 deletions
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3
drivers/iommu/iommu-priv.h
View File

@@ -24,9 +24,6 @@ static inline const struct iommu_ops *iommu_fwspec_ops(struct iommu_fwspec *fwsp
return iommu_ops_from_fwnode(fwspec ? fwspec->iommu_fwnode : NULL);
}
int iommu_group_replace_domain(struct iommu_group *group,
struct iommu_domain *new_domain);
int iommu_device_register_bus(struct iommu_device *iommu,
const struct iommu_ops *ops,
const struct bus_type *bus,

35
drivers/iommu/iommu.c
View File

@@ -2187,32 +2187,6 @@ int iommu_attach_group(struct iommu_domain *domain, struct iommu_group *group)
}
EXPORT_SYMBOL_GPL(iommu_attach_group);
/**
* iommu_group_replace_domain - replace the domain that a group is attached to
* @group: IOMMU group that will be attached to the new domain
* @new_domain: new IOMMU domain to replace with
*
* This API allows the group to switch domains without being forced to go to
* the blocking domain in-between.
*
* If the currently attached domain is a core domain (e.g. a default_domain),
* it will act just like the iommu_attach_group().
*/
int iommu_group_replace_domain(struct iommu_group *group,
struct iommu_domain *new_domain)
{
int ret;
if (!new_domain)
return -EINVAL;
mutex_lock(&group->mutex);
ret = __iommu_group_set_domain(group, new_domain);
mutex_unlock(&group->mutex);
return ret;
}
EXPORT_SYMBOL_NS_GPL(iommu_group_replace_domain, "IOMMUFD_INTERNAL");
static int __iommu_device_set_domain(struct iommu_group *group,
struct device *dev,
struct iommu_domain *new_domain,
@@ -3558,9 +3532,12 @@ EXPORT_SYMBOL_NS_GPL(iommu_detach_group_handle, "IOMMUFD_INTERNAL");
* @new_domain: new IOMMU domain to replace with
* @handle: attach handle
*
* This is a variant of iommu_group_replace_domain(). It allows the caller to
* provide an attach handle for the new domain and use it when the domain is
* attached.
* This API allows the group to switch domains without being forced to go to
* the blocking domain in-between. It allows the caller to provide an attach
* handle for the new domain and use it when the domain is attached.
*
* If the currently attached domain is a core domain (e.g. a default_domain),
* it will act just like the iommu_attach_group_handle().
*/
int iommu_replace_group_handle(struct iommu_group *group,
struct iommu_domain *new_domain,