kvm tools: why SDL window does not exit on "poweroff"?

kvm tools: why SDL window does not exit on "poweroff"?

[Lin Ming]

Hi all,

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?

Thanks,
Lin Ming

Re: kvm tools: why SDL window does not exit on "poweroff"?

[Pekka Enberg]

On Fri, Apr 12, 2013 at 10:42 AM, Lin Ming <minggr@gmail.com> 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?

                        Pekka

Re: kvm tools: why SDL window does not exit on "poweroff"?

[Cyrill Gorcunov]

On Fri, Apr 12, 2013 at 12:17:58PM +0300, Pekka Enberg wrote:
> On Fri, Apr 12, 2013 at 10:42 AM, Lin Ming <minggr@gmail.com> 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?

Hi guys! Not yet :-) Will report once I manage to.

Re: kvm tools: why SDL window does not exit on "poweroff"?

[Lin Ming]

On Fri, Apr 12, 2013 at 5:17 PM, Pekka Enberg <penberg@kernel.org> wrote:
> On Fri, Apr 12, 2013 at 10:42 AM, Lin Ming <minggr@gmail.com> 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

Re: kvm tools: why SDL window does not exit on "poweroff"?

[Pekka Enberg]

Hello,

On Mon, Apr 15, 2013 at 5:27 AM, Lin Ming <minggr@gmail.com> wrote:
> Will BIOS support be added in kvmtool in the future?

Yes, I expect that to happen eventually. Various patchsets have been
started by multiple people to support SeaBIOS but there hasn't been a
focused effort to push them forward.

                        Pekka

Re: kvm tools: why SDL window does not exit on "poweroff"?

[Lin Ming]

On Mon, Apr 15, 2013 at 2:48 PM, Pekka Enberg <penberg@kernel.org> wrote:
> Hello,

Hi,

>
> On Mon, Apr 15, 2013 at 5:27 AM, Lin Ming <minggr@gmail.com> wrote:
>> Will BIOS support be added in kvmtool in the future?
>
> Yes, I expect that to happen eventually. Various patchsets have been
> started by multiple people to support SeaBIOS but there hasn't been a
> focused effort to push them forward.

Could you show me the links to these patchsets?
I'd like to read and try it.

Thanks.

>
>                         Pekka

Re: kvm tools: why SDL window does not exit on "poweroff"?

[Pekka Enberg]

Hello,

On 04/15/2013 10:11 AM, Lin Ming wrote:
> On Mon, Apr 15, 2013 at 2:48 PM, Pekka Enberg <penberg@kernel.org> wrote:
>> Hello,
>
> Hi,
>
>>
>> On Mon, Apr 15, 2013 at 5:27 AM, Lin Ming <minggr@gmail.com> wrote:
>>> Will BIOS support be added in kvmtool in the future?
>>
>> Yes, I expect that to happen eventually. Various patchsets have been
>> started by multiple people to support SeaBIOS but there hasn't been a
>> focused effort to push them forward.
>
> Could you show me the links to these patchsets?
> I'd like to read and try it.

I managed to track down the work thanks to Asias and I uploaded it here:

https://github.com/penberg/seabios

			Pekka

Re: kvm tools: why SDL window does not exit on "poweroff"?

[Asias He]

On Thu, May 23, 2013 at 10:30:00AM +0300, Pekka Enberg wrote:
> Hello,
> 
> On 04/15/2013 10:11 AM, Lin Ming wrote:
> >On Mon, Apr 15, 2013 at 2:48 PM, Pekka Enberg <penberg@kernel.org> wrote:
> >>Hello,
> >
> >Hi,
> >
> >>
> >>On Mon, Apr 15, 2013 at 5:27 AM, Lin Ming <minggr@gmail.com> wrote:
> >>>Will BIOS support be added in kvmtool in the future?
> >>
> >>Yes, I expect that to happen eventually. Various patchsets have been
> >>started by multiple people to support SeaBIOS but there hasn't been a
> >>focused effort to push them forward.
> >
> >Could you show me the links to these patchsets?
> >I'd like to read and try it.
> 
> I managed to track down the work thanks to Asias and I uploaded it here:
> 
> https://github.com/penberg/seabios

Pekka, perhaps, you can put my un-finished VGA bits in your git tree as
well, for people who might be interested in and want to work on it ;-)

-- 
Asias