[PATCH v12 4/6] iommu/uapi: Rename uapi functions
From: Jacob Pan <hidden>
Date: 2020-09-25 16:31:03
Also in:
linux-iommu, lkml
Subsystem:
iommu subsystem, the rest · Maintainers:
Joerg Roedel, Will Deacon, Linus Torvalds
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. We plan to have two flavors of the same API functions, one called through ioctls, carrying a user pointer and one called directly with valid IOMMU UAPI structs. To differentiate both, let's rename existing functions with an iommu_uapi_ prefix. Suggested-by: Alex Williamson <redacted> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Jacob Pan <redacted> --- 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 609bd25bf154..4ae02291ccc2 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c@@ -1961,35 +1961,35 @@ 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 fee209efb756..710d5d2691eb 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h@@ -424,13 +424,13 @@ 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,
@@ -1032,21 +1032,22 @@ 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; }
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2.7.4