在 2020/6/5 下午6:05, David Hildenbrand 写道: >> I guess I know what's happening here. In case we only have DMA memory >> when booting, we don't reserve swiotlb buffers. Once we hotplug memory >> and online ZONE_NORMAL, we don't have any swiotlb DMA bounce buffers to >> map such PFNs (total 0 (slots), used 0 (slots)). >> >> Can you try with "swiotlb=force" on the kernel cmdline? > Alternative, looks like you can specify "-m 2G,maxmem=16G,slots=1", to > create proper ACPI tables that indicate hotpluggable memory. (I'll have > to look into QEMU to figure out to always indicate hotpluggable memory > that way). > That works too. Yes, better resolved in qemu, maybe. :) Thanks!
