diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2025-04-08 13:35:51 -0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2025-04-28 13:14:59 +0200 |
| commit | 21c03574df19f0d77cb2e4d28bc02c79b21e656a (patch) | |
| tree | 6bbbd006f265d58c7a148aa78c983bbf95589f81 /drivers/iommu/iommu.c | |
| parent | a4672d0fe17dd2b5b2f485ae6c98990164e874eb (diff) | |
iommu: Hide ops.domain_alloc behind CONFIG_FSL_PAMU
fsl_pamu is the last user of domain_alloc(), and it is using it to create
something weird that doesn't really fit into the iommu subsystem
architecture. It is a not a paging domain since it doesn't have any
map/unmap ops. It may be some special kind of identity domain.
For now just leave it as is. Wrap it's definition in CONFIG_FSL_PAMU to
discourage any new drivers from attempting to use it.
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/5-v4-ff5fb6b03bd1+288-iommu_virtio_domains_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 2c4983f07c5c..3e4a9fe867f5 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2025,8 +2025,10 @@ __iommu_paging_domain_alloc_flags(struct device *dev, unsigned int type, domain = ops->domain_alloc_paging(dev); else if (ops->domain_alloc_paging_flags) domain = ops->domain_alloc_paging_flags(dev, flags, NULL); +#if IS_ENABLED(CONFIG_FSL_PAMU) else if (ops->domain_alloc && !flags) domain = ops->domain_alloc(IOMMU_DOMAIN_UNMANAGED); +#endif else return ERR_PTR(-EOPNOTSUPP); |