On Tue, Jul 01, 2025 at 03:11:39PM +0000, Wei Liu wrote:
> On Tue, Jul 01, 2025 at 10:35:34AM +0200, Magnus Kulke wrote:
> > On Tue, May 20, 2025 at 10:52:39PM +0000, Wei Liu wrote:
> > > On Tue, May 20, 2025 at 01:30:17PM +0200, Magnus Kulke wrote:
> > > > + default:
> > > > + msg = &exit_msg;
> > >
> > > Do you not get any HALT exit? How are you going to shut down the VM?
> > >
> >
> > In the WHPX accelerator there is this comment:
> >
> > case WHvRunVpExitReasonX64Halt:
> > /*
> > * WARNING: as of build 19043.1526 (21H1), this exit reason is
> > no
> > * longer used.
> > */
> > ret = whpx_handle_halt(cpu);
> > break;
> >
> > I wonder if this also applies to HVMSG_X64_HALT from the MSHV driver?
>
> IIRC that's still used in our driver.
>
> You can try shutting down the VM with `poweroff` or `halt` and see if
> you get the exit.
>
> Wei
I wasn't able to trigger the exit with `poweroff` or `halt -p`. Or a
kernel module that performs:
```
local_irq_disable();
__asm__("hlt");
```
(it will just hang the guest).
I have added the handler, but it looks like it's dead code currently.
