mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-11-04 19:54:59 +00:00
ed42eee797
NVIDIA VCMDQ driver will have a driver-defined vDEVICE structure and do some HW configurations with that. To allow IOMMU drivers to define their own vDEVICE structures, move the struct iommufd_vdevice to the public header and provide a pair of viommu ops, similar to get_viommu_size and viommu_init. Doing this, however, creates a new window between the vDEVICE allocation and its driver-level initialization, during which an abort could happen but it can't invoke a driver destroy function from the struct viommu_ops since the driver structure isn't initialized yet. vIOMMU object doesn't have this problem, since its destroy op is set via the viommu_ops by the driver viommu_init function. Thus, vDEVICE should do something similar: add a destroy function pointer inside the struct iommufd_vdevice instead of the struct iommufd_viommu_ops. Note that there is unlikely a use case for a type dependent vDEVICE, so a static vdevice_size is probably enough for the near term instead of a get_vdevice_size function op. Link: https://patch.msgid.link/r/1e751c01da7863c669314d8e27fdb89eabcf5605.1752126748.git.nicolinc@nvidia.com Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Pranjal Shrivastava <praan@google.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Vasant Hegde <vasant.hegde@amd.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
History
|
|
|---|---|---|
| .. | ||
| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| cxl | ||
| drm | ||
| dt-bindings | ||
| hyperv | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| rv | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| ufs | ||
| vdso | ||
| video | ||
| xen | ||
| Kbuild | ||