Re: [Qemu-arm] [Qemu-devel] [PATCH v2] event: Add source information to SHUTDOWN

[Eric Blake]

On 04/20/2017 11:12 AM, Markus Armbruster wrote:

>>> Well technically /usr/sbin/halt just terminates all processes / kernel and
>>> halts CPUs, but the virtual machine is still active (and a 'reset' in the
>>> monitor can start it again. /usr/sbin/poweroff is what actually does the
>>> ACPI poweroff to trigger QEMU to exit[1]
>>
>> I'm thinking of this wording:
>>
>> triggered by a guest request (such as the guest running
>> /usr/sbin/poweroff to trigger an ACPI shutdown or machine halt instruction)
> 
> A quick glance at the patch suggests the instructions in question are
> typically writes to some device register.  I wouldn't call them "halt
> instructions", in particular since there's the x86 "hlt" instruction
> that does something else.

Then maybe: a guest request (such as the guest running
/usr/sbin/poweroff to trigger an ACPI or other hardware-specific
shutdown sequence)

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

signature.asc
Description: OpenPGP digital signature