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Re: [Qemu-devel] [PATCH] spapr_cpu_core: fail gracefully with non-pserie


From: David Gibson
Subject: Re: [Qemu-devel] [PATCH] spapr_cpu_core: fail gracefully with non-pseries machine types
Date: Tue, 12 Sep 2017 14:10:20 +1000
User-agent: Mutt/1.8.3 (2017-05-23)

On Mon, Sep 11, 2017 at 10:52:06PM +0200, Greg Kurz wrote:
> Since commit 7cca3e466eb0 ("ppc: spapr: Move VCPU ID calculation into
> sPAPR"), QEMU aborts when started with a *-spapr-cpu-core device and
> a non-pseries machine.
> 
> Let's rely on the already existing call to object_dynamic_cast() instead
> of using the SPAPR_MACHINE() macro.
> 
> Signed-off-by: Greg Kurz <address@hidden>

Applied to ppc-for-2.11.

> ---
>  hw/ppc/spapr_cpu_core.c |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c
> index d04d1e0d8164..dc9df0d393d1 100644
> --- a/hw/ppc/spapr_cpu_core.c
> +++ b/hw/ppc/spapr_cpu_core.c
> @@ -201,7 +201,7 @@ error:
>  
>  static void spapr_cpu_core_realize(DeviceState *dev, Error **errp)
>  {
> -    sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
> +    sPAPRMachineState *spapr;
>      sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
>      sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_GET_CLASS(OBJECT(dev));
>      CPUCore *cc = CPU_CORE(OBJECT(dev));
> @@ -211,7 +211,8 @@ static void spapr_cpu_core_realize(DeviceState *dev, 
> Error **errp)
>      void *obj;
>      int i, j;
>  
> -    if (!object_dynamic_cast(qdev_get_machine(), TYPE_SPAPR_MACHINE)) {
> +    spapr = (sPAPRMachineState *) qdev_get_machine();
> +    if (!object_dynamic_cast((Object *) spapr, TYPE_SPAPR_MACHINE)) {
>          error_setg(errp, "spapr-cpu-core needs a pseries machine");
>          return;
>      }
> 

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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