> -----Original Message----- > From: Alexander Graf [mailto:ag...@suse.de] > Sent: Monday, April 16, 2012 1:47 PM > To: Bhushan Bharat-R65777 > Cc: qemu-devel@nongnu.org; Wood Scott-B07421 > Subject: Re: qemu_power_down_request handling > > > On 16.04.2012, at 10:07, Bhushan Bharat-R65777 wrote: > > > Hi All, > > > > The "-watchdog-action shutdown" uses the monitor system_shutdown mechanism > > but > this does not actually powerdown the system. > > > > In code, If there is pending powerdown_request > (qemu_system_powerdown_request() called) then it try to raise an irq. What is > that irq supposed to do. Currently it in NULL pointer so does not do anything. > > > > Code snapshot -- vl.c : main_loop_should_exit() > > > > .... > > if (qemu_powerdown_requested()) { > > monitor_protocol_event(QEVENT_POWERDOWN, NULL); > > qemu_irq_raise(qemu_system_powerdown); > > } > > . . . . > > > > Is the powerdown_request handling not complete? > > The watchdog shutdown event is a soft power off. Imagine a PC where you press > the power button, the OS gets notified through ACPI that it's supposed to shut > down and shuts down the machine. > > I don't know of any BookE system that has a comparable mechanism. We could > implement it through qemu-ga and fall back to hard power off maybe?
Till someone develop this interface, does it make sense to use qemu_system_shutdown_request() rather than qemu_system_powerdown_request() for "-watchdog-action shutdown" ? Thanks -Bharat
