On 26/03/2015 17:34, Nate Case wrote: > 0x52: add al,dh > 0x54: pop cx > 0x55: clc > 0x56: add al,dh > => 0x58: cs > 0x59: call 0xf05c > 0x5c: shr bh,cl > 0x5e: add al,dh > 0x60: add ax,0xcf > 0x63: lock repnz out 0x0,al This code makes no sense, it looks like the processor has gone into the weeds. :( Based on this: cs 0x9020 36896 I could guess, based on your use of resource2_wc, that the host is bypassing the processor cache but the guest is not. This use is not supported on x86 KVM, sorry. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html