On Mon, May 24, 2021 at 11:51 PM Konrad Rzeszutek Wilk
[off-list ref] wrote:

On Tue, May 18, 2021 at 02:51:52PM +0800, Claire Chang wrote:

quoted

Still keep this function because directly using dev->dma_io_tlb_mem
will cause issues for memory allocation for existing devices. The pool
can't support atomic coherent allocation so we need to distinguish the
per device pool and the default pool in swiotlb_alloc.

This above should really be rolled in the commit. You can prefix it by
"The reason it was done this way was because directly using .."

Will add it.