On Thu, Aug 18, 2022 at 03:07:40PM +0300, Vadym Kochan wrote: > It works with the following changes: > > #1 dma-ranges = <0x0 0x0 0x2 0x0 0x0 0x80000000>; > > #3 swiotlb="force" > > Is it OK to force the memory allocation from the start for the swiotlb ? It should be ok, but isn't really optimal. I wonder if we should just allow DT to specify the swiotlb buffer location. Basically have yet another RESERVEDMEM_OF_DECLARE variant for it, which shouldn't be all that much work except for figuring out the interaction with the various kernel command line options.
