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Re: [Qemu-devel] [PATCH] fixup! ppc: spapr: use cpu type name directly


From: David Gibson
Subject: Re: [Qemu-devel] [PATCH] fixup! ppc: spapr: use cpu type name directly
Date: Fri, 13 Oct 2017 10:53:38 +1100
User-agent: Mutt/1.9.1 (2017-09-22)

On Thu, Oct 12, 2017 at 05:45:14PM +0200, Igor Mammedov wrote:
> follow up commit that registers host-spapr-cpu-core type unconditionally
>  "ppc: spapr: register 'host' core type  along with the rest of core types"
> 
> makes 'non' machine crash
>  ppc64-softmmu/qemu-system-ppc64 -M none -device host-spapr-cpu-core
>  ERROR:qom/object.c:217:object_type_get_instance_size: assertion failed: 
> (type != NULL)
>  Aborted
> 
> before it qemu fails cleanly with
>  ppc64-softmmu/qemu-system-ppc64 -M none -device host-spapr-cpu-core
>  qemu-system-ppc64: -device host-spapr-cpu-core: 'host-spapr-cpu-core' is not 
> a valid device model name
> 
> spapr_cpu_core_realize() already has explicit check for pseries machine,
> so move access to host cpu type after it so 'none' machine would fail
> cleanly as expected.
> 
> Reported-by: Greg Kurz <address@hidden>
> Signed-off-by: Igor Mammedov <address@hidden>

Applied (folded into the original patch).

> ---
>  hw/ppc/spapr_cpu_core.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c
> index b5bbb6a..7dbf9c3 100644
> --- a/hw/ppc/spapr_cpu_core.c
> +++ b/hw/ppc/spapr_cpu_core.c
> @@ -151,7 +151,7 @@ static void spapr_cpu_core_realize(DeviceState *dev, 
> Error **errp)
>      sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
>      sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_GET_CLASS(OBJECT(dev));
>      CPUCore *cc = CPU_CORE(OBJECT(dev));
> -    size_t size = object_type_get_instance_size(scc->cpu_type);
> +    size_t size;
>      Error *local_err = NULL;
>      void *obj;
>      int i, j;
> @@ -162,6 +162,7 @@ static void spapr_cpu_core_realize(DeviceState *dev, 
> Error **errp)
>          return;
>      }
>  
> +    size = object_type_get_instance_size(scc->cpu_type);
>      sc->threads = g_malloc0(size * cc->nr_threads);
>      for (i = 0; i < cc->nr_threads; i++) {
>          char id[32];

-- 
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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