On Mon, Mar 21, 2011 at 11:43:32AM +0200, Avi Kivity wrote: > >47965.428797: kvm_mmio: mmio read len 4 gpa 0xbfff4 val 0x0 > >47965.428797: kvm_entry: vcpu 0 > >47965.428798: kvm_exit: reason npf rip 0xd020203c > >47965.428798: kvm_page_fault: address bfff8 error_code 4 > >47965.428799: kvm_emulate_insn: 0:d020203c: 58 (prot32) > > That's a POP instruction. So openbsd mapped the stack into the > framebuffer, and kvm has to emulate everything. > IIRC openbsd had always have this problem with powerdown. Last time I looked at it I found that when openbsd receives ACPI interrupt it enters some kind of interrupt injection loop where with each received interrupt stack grows a little bit. When stack starts to overlap with frame buffer emulation error happens. May be something wrong with our MP tables, but I couldn't figure what. > Please post a complete binary trace from bootup until the > host_state_reload issue appears. > > >47965.428799: kvm_mmio: mmio unsatisfied-read len 4 gpa 0xbfff8 val 0x0 > >47965.428801: kvm_mmio: mmio read len 4 gpa 0xbfff8 val 0x30 > >47965.428801: kvm_entry: vcpu 0 > >47965.428802: kvm_exit: reason vintr rip 0xd0202041 > >47965.428802: kvm_inj_virq: irq 81 > >47965.428802: kvm_inj_virq: irq 81 > >47965.428803: kvm_entry: vcpu 0 > >47965.428803: kvm_exit: reason npf rip 0xd0202041 > >47965.428804: kvm_page_fault: address bfffc error_code 6 > >47965.428804: kvm_emulate_insn: 0:d0202041: cf (prot32) > >47965.428805: kvm_emulate_insn: 0:d0202041: cf (prot32) failed > > We don't emulate IRET-with-mmio-stack. > -- Gleb. -- 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
