Re: [PATCH] ppc/pnv: Silence missing BMC warning with qtest

[Greg Kurz <groug@kaod.org>]

On Mon, 22 Jun 2020 09:13:46 +0200
Cédric Le Goater <clg@kaod.org> wrote:

> On 6/22/20 8:57 AM, Greg Kurz wrote:
> > The device introspect test in qtest emits some warnings with the
> > the pnv machine types during the "nodefaults" phase:
> > 
> > TEST check-qtest-ppc64: tests/qtest/device-introspect-test
> > qemu-system-ppc64: warning: machine has no BMC device. Use '-device
> > ipmi-bmc-sim,id=bmc0 -device isa-ipmi-bt,bmc=bmc0,irq=10' to define
> > one
> > qemu-system-ppc64: warning: machine has no BMC device. Use '-device
> > ipmi-bmc-sim,id=bmc0 -device isa-ipmi-bt,bmc=bmc0,irq=10' to define
> > one
> > qemu-system-ppc64: warning: machine has no BMC device. Use '-device
> > ipmi-bmc-sim,id=bmc0 -device isa-ipmi-bt,bmc=bmc0,irq=10' to define
> > one
> > 
> > This is expected since the pnv machine doesn't create the internal
> > BMC simulator fallback when "-nodefaults" is passed on the command
> > line, but these warnings appear in ci logs and confuse people.
> > 
> > Not having a BMC isn't recommended but it is still a supported
> > configuration, so a straightforward fix is to just silent this
> > warning when qtest is enabled.
> > 
> > Fixes: 25f3170b0654 ("ppc/pnv: Create BMC devices only when defaults are enabled")
> > Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> > Signed-off-by: Greg Kurz <groug@kaod.org>
> 
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
> 
> It looks good but could you reproduce ? 
> 

Yup, this test is only run in "slow" mode, eg:

    make check-qtest-ppc64 SPEED=slow


> C.
> 
> > ---
> >  hw/ppc/pnv.c |    9 ++++++---
> >  1 file changed, 6 insertions(+), 3 deletions(-)
> > 
> > diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
> > index 806a5d9a8d34..1622d29b4ba7 100644
> > --- a/hw/ppc/pnv.c
> > +++ b/hw/ppc/pnv.c
> > @@ -21,6 +21,7 @@
> >  #include "qemu-common.h"
> >  #include "qemu/units.h"
> >  #include "qapi/error.h"
> > +#include "sysemu/qtest.h"
> >  #include "sysemu/sysemu.h"
> >  #include "sysemu/numa.h"
> >  #include "sysemu/reset.h"
> > @@ -587,9 +588,11 @@ static void pnv_reset(MachineState *machine)
> >      bmc = pnv_bmc_find(&error_fatal);
> >      if (!pnv->bmc) {
> >          if (!bmc) {
> > -            warn_report("machine has no BMC device. Use '-device "
> > -                        "ipmi-bmc-sim,id=bmc0 -device isa-ipmi-bt,bmc=bmc0,irq=10' "
> > -                        "to define one");
> > +            if (!qtest_enabled()) {
> > +                warn_report("machine has no BMC device. Use '-device "
> > +                            "ipmi-bmc-sim,id=bmc0 -device isa-ipmi-bt,bmc=bmc0,irq=10' "
> > +                            "to define one");
> > +            }
> >          } else {
> >              pnv_bmc_set_pnor(bmc, pnv->pnor);
> >              pnv->bmc = bmc;
> > 
> > 
>