On Sun, Nov 10, 2024 at 03:46:50PM +0200, Leon Romanovsky wrote: > From: Christoph Hellwig <hch@xxxxxx> > > For the upcoming IOVA-based DMA API we want to use the interface batch the > sync after mapping multiple entries from dma-iommu without having a > scatterlist. > > For that move more sanity checks from the callers into __iommu_map and > make that function available outside of iommu.c as iommu_map_nosync. > > Add a wrapper for the map_sync as iommu_sync_map so that callers don't > need to poke into the methods directly. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx> > --- > drivers/iommu/iommu.c | 65 +++++++++++++++++++------------------------ > include/linux/iommu.h | 4 +++ > 2 files changed, 33 insertions(+), 36 deletions(-) I was a little worried that exposing iommu_map_nosync() directly could expose driver bugs where the range being sync'd was assumed to be mapped, but I couldn't spot anything obvious from a quick check, so: Acked-by: Will Deacon <will@xxxxxxxxxx> Will
