search for: padding_size

...s | org_size)) { + phys = swiotlb_tbl_map_single(dev, + __phys_to_dma(dev, io_tlb_start), + phys, org_size, aligned_size, dir, attrs); + + if (phys == DMA_MAPPING_ERROR) + return DMA_MAPPING_ERROR; + + /* Cleanup the padding area. */ + void *padding_start = phys_to_virt(phys); + size_t padding_size = aligned_size; + + if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) && + (dir == DMA_TO_DEVICE || + dir == DMA_BIDIRECTIONAL)) { + padding_start += org_size; + padding_size -= org_size; + } - iova = iommu_dma_alloc_iova(domain, size, dma_mask, dev); + memset(padding_start, 0,...

...tlb_error; cfb94a372f2d4e Lu Baolu 2019-09-06 3994 } else { cfb94a372f2d4e Lu Baolu 2019-09-06 3995 /* Cleanup the padding area. */ cfb94a372f2d4e Lu Baolu 2019-09-06 3996 void *padding_start = phys_to_virt(tlb_addr); cfb94a372f2d4e Lu Baolu 2019-09-06 3997 size_t padding_size = aligned_size; cfb94a372f2d4e Lu Baolu 2019-09-06 3998 cfb94a372f2d4e Lu Baolu 2019-09-06 3999 if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) && cfb94a372f2d4e Lu Baolu 2019-09-06 4000 (dir == DMA_TO_DEVICE || cfb94a372f2d4e Lu Baolu 2019-09-06 4001 di...

This patchset converts the intel iommu driver to the dma-iommu api. While converting the driver I exposed a bug in the intel i915 driver which causes a huge amount of artifacts on the screen of my laptop. You can see a picture of it here: https://github.com/pippy360/kernelPatches/blob/master/IMG_20191219_225922.jpg This issue is most likely in the i915 driver and is most likely caused by the

This patchset converts the intel iommu driver to the dma-iommu api. While converting the driver I exposed a bug in the intel i915 driver which causes a huge amount of artifacts on the screen of my laptop. You can see a picture of it here: https://github.com/pippy360/kernelPatches/blob/master/IMG_20191219_225922.jpg This issue is most likely in the i915 driver and is most likely caused by the