On Fri, Apr 12, 2013 at 5:17 PM, Pekka Enberg <penberg@xxxxxxxxxx> wrote: > On Fri, Apr 12, 2013 at 10:42 AM, Lin Ming <minggr@xxxxxxxxx> wrote: >> I run "poweroff" or "halt" in SDL window, but the window does not exit >> although guest is already halted. But qemu can exit properly. >> >> Is it because "hlt" instruction is not emulated? >> Or other reason? >> >> Any hint to fix it? > > IIRC, poweroff is supposed to happen via some dedicated ioport on x86. > Cyrill, didn't you look into this at some point? x86 poweroff happens via ACPI S5 state. There's no BIOS support in kvmtool. So ACPI is not supported. With "acpi=off", qemu can't really "poweroff" guest too. Run "poweroff" in qemu with acpi on. Will now halt. [ 13.764951] sd 0:0:0:0: [sda] Stopping disk [ 13.766309] ACPI: Preparing to enter system sleep state S5 [ 13.767565] Disabling non-boot CPUs ... [ 13.768294] Power down. Run "poweroff" in qemu with acpi off. Will now halt. [ 16.773539] sd 0:0:0:0: [sda] Stopping disk [ 16.775245] System halted. Will BIOS support be added in kvmtool in the future? Thanks, Lin Ming -- 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
