Loading Documentation/DMA-attributes.txt +7 −0 Original line number Diff line number Diff line Loading @@ -119,3 +119,10 @@ reference so that when the buffer is freed, the mapping is not destroyed and can be re-used. By specifying this attribute, an additional reference will NOT be held by the lazy mapping code and it will be released as soon as the buffer is freed. DMA_ATTR_EXEC_MAPPING --------------------- By default, the DMA mappings are non-executable. Some use cases might require an executable mapping. This attribute can be used to indicate to the DMA subsystem to create an executable mappings for the buffer. include/linux/dma-attrs.h +1 −0 Original line number Diff line number Diff line Loading @@ -21,6 +21,7 @@ enum dma_attr { DMA_ATTR_STRONGLY_ORDERED, DMA_ATTR_SKIP_ZEROING, DMA_ATTR_NO_DELAYED_UNMAP, DMA_ATTR_EXEC_MAPPING, DMA_ATTR_MAX, }; Loading Loading
Documentation/DMA-attributes.txt +7 −0 Original line number Diff line number Diff line Loading @@ -119,3 +119,10 @@ reference so that when the buffer is freed, the mapping is not destroyed and can be re-used. By specifying this attribute, an additional reference will NOT be held by the lazy mapping code and it will be released as soon as the buffer is freed. DMA_ATTR_EXEC_MAPPING --------------------- By default, the DMA mappings are non-executable. Some use cases might require an executable mapping. This attribute can be used to indicate to the DMA subsystem to create an executable mappings for the buffer.
include/linux/dma-attrs.h +1 −0 Original line number Diff line number Diff line Loading @@ -21,6 +21,7 @@ enum dma_attr { DMA_ATTR_STRONGLY_ORDERED, DMA_ATTR_SKIP_ZEROING, DMA_ATTR_NO_DELAYED_UNMAP, DMA_ATTR_EXEC_MAPPING, DMA_ATTR_MAX, }; Loading
