On Wed, Jan 23, 2019 at 05:30:46PM +0100, Joerg Roedel wrote:
> +bool is_swiotlb_active(void)
> +{
> + return !no_iotlb_memory;
> +}As I've just introduced and fixed a bug in this area in the current cycle - I don't think no_iotlb_memory is what your want (and maybe not useful at all): if the arch valls swiotlb_exit after previously initializing a buffer it won't be set. You probably want to check for non-zero io_tlb_start and/or io_tlb_end.
