>>> On 28.11.17 at 10:12, <christian.koenig@xxxxxxx> wrote: > In theory the BIOS would search for address space and won't find > anything, so the hotplug operation should fail even before it reaches > the kernel in the first place. How would the BIOS know what the OS does or plans to do? I think it's the other way around - the OS needs to avoid using any regions for MMIO which are marked as hotpluggable in SRAT. Since there is no vNUMA yet for Xen Dom0, that would need special handling. Jan
