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| author |   Jason Gunthorpe <jgg@nvidia.com> | 2024-10-18 14:01:19 -0300 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2024-10-29 09:52:11 +0100 |
| commit | 69e5a17511f654db0fe058d22719cef008c9faf1 (patch) | |
| tree | c455a4c34acc4656b57b9187ab9dd98cbc243cf4 | |
| parent | iommu/sysfs: constify the class struct (diff) | |
| download | wireguard-linux-69e5a17511f654db0fe058d22719cef008c9faf1.tar.xz wireguard-linux-69e5a17511f654db0fe058d22719cef008c9faf1.zip | |
iommu: Remove useless flush from iommu_create_device_direct_mappings()
These days iommu_map() does not require external flushing, it always
internally handles any required flushes. Since
iommu_create_device_direct_mappings() only calls iommu_map(), remove
the extra call.
Since this is the last call site for iommu_flush_iotlb_all() remove it
too.
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/0-v1-bb6c694e1b07+a29e1-iommu_no_flush_all_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | drivers/iommu/iommu.c | 4 | ||||
| -rw-r--r-- | include/linux/iommu.h | 10 |
2 files changed, 0 insertions, 14 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 4c29a4bc368b..e5d5b4fd322a 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1141,10 +1141,6 @@ map_end: } } - - if (!list_empty(&mappings) && iommu_is_dma_domain(domain)) - iommu_flush_iotlb_all(domain); - out: iommu_put_resv_regions(dev, &mappings); diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 62d1b85c80d3..03f9fa833db9 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -852,12 +852,6 @@ void iommu_set_dma_strict(void); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); -static inline void iommu_flush_iotlb_all(struct iommu_domain *domain) -{ - if (domain->ops->flush_iotlb_all) - domain->ops->flush_iotlb_all(domain); -} - static inline void iommu_iotlb_sync(struct iommu_domain *domain, struct iommu_iotlb_gather *iotlb_gather) { @@ -1141,10 +1135,6 @@ static inline ssize_t iommu_map_sg(struct iommu_domain *domain, return -ENODEV; } -static inline void iommu_flush_iotlb_all(struct iommu_domain *domain) -{ -} - static inline void iommu_iotlb_sync(struct iommu_domain *domain, struct iommu_iotlb_gather *iotlb_gather) { |