On 6/27/25 3:10 AM, Petr Tesarik wrote: > Add an introductory paragraph to Part Id - Streaming DMA mappings and move > the explanation of address constraints there, because it applies to all map > functions. > > Clarify that streaming DMA can be used with memory which does not meet the > addressing constraints of a device, but it may fail in that case. > > Make a note about SWIOTLB and link to the detailed description of it. > > Do not mention platform-dependent allocation flags. The note may mislead > device driver authors into thinking that they should poke into and try to > second-guess the DMA API implementation. They definitely shouldn't. > > Remove the claim that platforms with an IOMMU may not require physically > contiguous buffers. The current implementation explicitly rejects vmalloc > addresses, regardless of IOMMU. > > Signed-off-by: Petr Tesarik <ptesarik@xxxxxxxx> Tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Thanks. > --- > Documentation/core-api/dma-api.rst | 36 +++++++++++++++++------------- > 1 file changed, 21 insertions(+), 15 deletions(-) -- ~Randy
