Hi Robin, On Mon, Aug 22, 2022 at 11:06:43AM +0100, Robin Murphy wrote: > On 2022-08-21 07:17, Christoph Hellwig wrote: > > 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. > > We already have all the information we need in the DT (and ACPI), the arm64 > init code just needs to do a better job of interpreting it properly. I'll > see what I can come up with once I've finished what I'm currently tied up > in. > > Thanks, > Robin. Can I help you with something ? Thanks,
