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qmp: add QMP interface "query-cpu-model-comparison"

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Let's provide a standardized interface to compare two CPU models.
"query-cpu-model-compare" takes two models and returns  how they compare
in a specific configuration.

The result will give guarantees about runnability. E.g. if a CPU model A
is a subset of CPU model B, model A is guaranteed to run in configurations
where model B runs, but not the other way around (might or might not run).

Usually, CPU features or CPU generations are used to calculate the result.
If a model is not guaranteed to run in a certain environment (e.g.
incompatible), a  compatible one can be created by "baselining" both models
(follow up patch).

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <20160905085244.99980-27-dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
David Hildenbrand 2016-09-05 10:52:40 +02:00 • committed by Cornelia Huck
parent e09484efbc
commit 0031e0d683
6 changed files with 115 additions and 0 deletions
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12
stubs/arch-query-cpu-model-comparison.c Normal file
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#include "qemu/osdep.h"
#include "qemu-common.h"
#include "sysemu/arch_init.h"
#include "qapi/qmp/qerror.h"
CpuModelCompareInfo *arch_query_cpu_model_comparison(CpuModelInfo *modela,
CpuModelInfo *modelb,
Error **errp)
{
error_setg(errp, QERR_UNSUPPORTED);
return NULL;
}