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i386: "unavailable-features" QOM property

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Add a "unavailable-features" QOM property to X86CPU objects that
have the same semantics of "unavailable-features" on
query-cpu-definitions.  The new property has the same goal of
"filtered-features", but is generic enough to let any kind of CPU
feature to be listed there without relying on low level details
like CPUID leaves or MSR numbers.

Message-Id: <20190422234742.15780-3-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Eduardo Habkost 2019-04-22 20:47:42 -03:00
parent 5a853fc57a
commit 506174bf82
1 changed files with 20 additions and 0 deletions
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20
target/i386/cpu.c
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@ -3692,6 +3692,17 @@ static void x86_cpu_list_feature_names(FeatureWordArray features,
}
}
static void x86_cpu_get_unavailable_features(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
X86CPU *xc = X86_CPU(obj);
strList *result = NULL;
x86_cpu_list_feature_names(xc->filtered_features, &result);
visit_type_strList(v, "unavailable-features", &result, errp);
}
/* Check for missing features that may prevent the CPU class from
* running using the current machine and accelerator.
*/
@ -5632,6 +5643,15 @@ static void x86_cpu_initfn(Object *obj)
object_property_add(obj, "filtered-features", "X86CPUFeatureWordInfo",
x86_cpu_get_feature_words,
NULL, NULL, (void *)cpu->filtered_features, NULL);
/*
* The "unavailable-features" property has the same semantics as
* CpuDefinitionInfo.unavailable-features on the "query-cpu-definitions"
* QMP command: they list the features that would have prevented the
* CPU from running if the "enforce" flag was set.
*/
object_property_add(obj, "unavailable-features", "strList",
x86_cpu_get_unavailable_features,
NULL, NULL, NULL, &error_abort);
object_property_add(obj, "crash-information", "GuestPanicInformation",
x86_cpu_get_crash_info_qom, NULL, NULL, NULL, NULL);