On Mon, Oct 24, 2022 at 03:20:43PM +0200, Juergen Gross wrote: > Dom0 is (normally) a PV domain, so the physical memory can be still above > 4 GB even with dom0_mem set to 4GB.
Which means that we need to ensure the DMA ops for Xen-PV (which is always xen-swiotlb I think?) need to return DMA_BIT_MASK(64) or whatever is the highest possible address.
