[dpdk-dev] [PATCH v5 4/4] power: send confirmation cmd to vm guest

[Daly, Lee]

> On 05/04/2019 14:24, Hajkowski wrote:
> > From: Marcin Hajkowski <marcinx.hajkowski at intel.com>
> >
> > Use new guest channel API to send confirmation message for received
> > power command.
> >
> > Signed-off-by: Marcin Hajkowski <marcinx.hajkowski at intel.com>
> > ---
> >   examples/vm_power_manager/channel_monitor.c | 68
> +++++++++++++++++++--
> >   1 file changed, 62 insertions(+), 6 deletions(-)
> >
> > diff --git a/examples/vm_power_manager/channel_monitor.c
> > b/examples/vm_power_manager/channel_monitor.c
> > index 7892d75de..ed580b36a 100644
> > --- a/examples/vm_power_manager/channel_monitor.c
> > +++ b/examples/vm_power_manager/channel_monitor.c


<...>

> 
> Using the guest_cli sample app in a VM, sending commands to the
> vm_power_manager app on the host, we now have Acks and Nacks coming
> from the host to the VM to conform the execution of the guest requests.
> 
> vmpower(guest)> set_cpu_freq 3 down
> ACK received for message sent to host.
> vmpower(guest)> set_cpu_freq 3 up
> ACK received for message sent to host.
> vmpower(guest)> set_cpu_freq 3 up
> NACK received for message sent to host.
> 
> (NACK because we're already at the maxumum frequency)
> 
> And in the host vm_power_manager command line, we can see when a
> guest request cannot be processed:
> POWER: Turbo is off, frequency can't be scaled up more 31
> 
> Patchset looks good functionally.
> 
> Tested-by: David Hunt <david.hunt at intel.com>
 Acked-by: Lee Daly <lee.daly at intel.com>