User APIs such as iommu_sva_unbind_gpasid() may also be used by the kernel. Since we introduced user pointer to the UAPI functions, in-kernel callers cannot share the same APIs. In-kernel callers are also trusted, there is no need to validate the data.
This patch renames all UAPI functions with iommu_uapi_ prefix such that is clear to the intended callers. Suggested-by: Alex Williamson <alex.william...@redhat.com> Signed-off-by: Jacob Pan <jacob.jun....@linux.intel.com> --- drivers/iommu/iommu.c | 18 +++++++++--------- include/linux/iommu.h | 31 ++++++++++++++++--------------- 2 files changed, 25 insertions(+), 24 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index b6858adc4f17..3a913ce94a3d 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1950,35 +1950,35 @@ int iommu_attach_device(struct iommu_domain *domain, struct device *dev) } EXPORT_SYMBOL_GPL(iommu_attach_device); -int iommu_cache_invalidate(struct iommu_domain *domain, struct device *dev, - struct iommu_cache_invalidate_info *inv_info) +int iommu_uapi_cache_invalidate(struct iommu_domain *domain, struct device *dev, + struct iommu_cache_invalidate_info *inv_info) { if (unlikely(!domain->ops->cache_invalidate)) return -ENODEV; return domain->ops->cache_invalidate(domain, dev, inv_info); } -EXPORT_SYMBOL_GPL(iommu_cache_invalidate); +EXPORT_SYMBOL_GPL(iommu_uapi_cache_invalidate); -int iommu_sva_bind_gpasid(struct iommu_domain *domain, - struct device *dev, struct iommu_gpasid_bind_data *data) +int iommu_uapi_sva_bind_gpasid(struct iommu_domain *domain, + struct device *dev, struct iommu_gpasid_bind_data *data) { if (unlikely(!domain->ops->sva_bind_gpasid)) return -ENODEV; return domain->ops->sva_bind_gpasid(domain, dev, data); } -EXPORT_SYMBOL_GPL(iommu_sva_bind_gpasid); +EXPORT_SYMBOL_GPL(iommu_uapi_sva_bind_gpasid); -int iommu_sva_unbind_gpasid(struct iommu_domain *domain, struct device *dev, - ioasid_t pasid) +int iommu_uapi_sva_unbind_gpasid(struct iommu_domain *domain, struct device *dev, + ioasid_t pasid) { if (unlikely(!domain->ops->sva_unbind_gpasid)) return -ENODEV; return domain->ops->sva_unbind_gpasid(dev, pasid); } -EXPORT_SYMBOL_GPL(iommu_sva_unbind_gpasid); +EXPORT_SYMBOL_GPL(iommu_uapi_sva_unbind_gpasid); static void __iommu_detach_device(struct iommu_domain *domain, struct device *dev) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 5f0b7859d2eb..2dcc1a33f6dc 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -430,13 +430,13 @@ extern int iommu_attach_device(struct iommu_domain *domain, struct device *dev); extern void iommu_detach_device(struct iommu_domain *domain, struct device *dev); -extern int iommu_cache_invalidate(struct iommu_domain *domain, - struct device *dev, - struct iommu_cache_invalidate_info *inv_info); -extern int iommu_sva_bind_gpasid(struct iommu_domain *domain, - struct device *dev, struct iommu_gpasid_bind_data *data); -extern int iommu_sva_unbind_gpasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid); +extern int iommu_uapi_cache_invalidate(struct iommu_domain *domain, + struct device *dev, + struct iommu_cache_invalidate_info *inv_info); +extern int iommu_uapi_sva_bind_gpasid(struct iommu_domain *domain, + struct device *dev, struct iommu_gpasid_bind_data *data); +extern int iommu_uapi_sva_unbind_gpasid(struct iommu_domain *domain, + struct device *dev, ioasid_t pasid); extern struct iommu_domain *iommu_get_domain_for_dev(struct device *dev); extern struct iommu_domain *iommu_get_dma_domain(struct device *dev); extern int iommu_map(struct iommu_domain *domain, unsigned long iova, @@ -1054,21 +1054,22 @@ static inline int iommu_sva_get_pasid(struct iommu_sva *handle) return IOMMU_PASID_INVALID; } -static inline int -iommu_cache_invalidate(struct iommu_domain *domain, - struct device *dev, - struct iommu_cache_invalidate_info *inv_info) +static inline int iommu_uapi_cache_invalidate(struct iommu_domain *domain, + struct device *dev, + struct iommu_cache_invalidate_info *inv_info) { return -ENODEV; } -static inline int iommu_sva_bind_gpasid(struct iommu_domain *domain, - struct device *dev, struct iommu_gpasid_bind_data *data) + +static inline int iommu_uapi_sva_bind_gpasid(struct iommu_domain *domain, + struct device *dev, + struct iommu_gpasid_bind_data *data) { return -ENODEV; } -static inline int iommu_sva_unbind_gpasid(struct iommu_domain *domain, - struct device *dev, int pasid) +static inline int iommu_uapi_sva_unbind_gpasid(struct iommu_domain *domain, + struct device *dev, int pasid) { return -ENODEV; } -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu