On Mon, 23 Jan 2023 22:31:39 +0100, Marek Marczykowski-Górecki wrote: > > On Fri, Jan 20, 2023 at 02:19:08PM +0100, Takashi Iwai wrote: > > On Fri, 20 Jan 2023 13:11:34 +0100, > > Marek Marczykowski-Górecki wrote: > > > > > It's puzzling, then. The patch changes the allocation with the > > dma_alloc_coherent(), and that's what does with the Kconfig hack > > you've tested. One possible significant difference is the use of the > > DMA address. > > > > > BTW, xen_domain() will also return true on PVH/HVM domain, which should > > > not need any of this special treatment. It's PV that is weird. > > > > OK, then it can be an overkill. > > > > Below is another try: it changes the different use of the DMA buffer > > address. Let's cross fingers. > > 3 days update and it still works! Great, I'm going to submit the proper patches, then. Thanks for your patient testing! Takashi