Re: [RFC PATCH 1/2] swiotlb: Split up single swiotlb lock

[Christoph Hellwig]

On Thu, Apr 28, 2022 at 03:44:36PM +0100, Robin Murphy wrote:
> Rather than introduce this extra level of allocator complexity, how about
> just dividing up the initial SWIOTLB allocation into multiple io_tlb_mem
> instances?

Yeah.  We're almost done removing all knowledge of swiotlb from drivers,
so the very last thing I want is an interface that allows a driver to
allocate a per-device buffer.