Hi Paolo, On Fri, Aug 05, 2022 at 10:10:02AM +0200, Paolo Bonzini wrote: > On 8/5/22 01:04, Jason A. Donenfeld wrote: > > + /* Nothing else uses this part of the hardware mapped region */ > > + setup_data_base = 0xfffff - 0x1000; > > Isn't this where the BIOS lives? I don't think this works. That's the segment dedicated to ROM and hardware mapped addresses. So that's a place to put ROM material. No actual software will use it. Jason