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cpu: Add x86FeatureInData

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The function checks CPUID data for a given feature.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This commit is contained in:
Jiri Denemark 2016-06-28 12:23:48 +02:00
parent ff559b80d0
commit dc4542dea5
1 changed files with 27 additions and 21 deletions
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48
src/cpu/cpu_x86.c
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@ -767,6 +767,27 @@ x86FeatureFindInternal(const char *name)
}
static int
x86FeatureInData(const char *name,
const virCPUx86Data *data,
virCPUx86MapPtr map)
{
virCPUx86FeaturePtr feature;
if (!(feature = x86FeatureFind(map, name)) &&
!(feature = x86FeatureFindInternal(name))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown CPU feature %s"), name);
return -1;
}
if (x86DataIsSubset(data, &feature->data))
return 1;
else
return 0;
}
static bool
x86FeatureIsMigratable(const char *name,
void *cpu_map)
@ -2526,15 +2547,12 @@ x86UpdateCustom(virCPUDefPtr guest,
for (i = 0; i < guest->nfeatures; i++) {
if (guest->features[i].policy == VIR_CPU_FEATURE_OPTIONAL) {
virCPUx86FeaturePtr feature;
if (!(feature = x86FeatureFind(map, guest->features[i].name))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unknown CPU feature %s"),
guest->features[i].name);
goto cleanup;
}
int supported = x86FeatureInData(guest->features[i].name,
&host_model->data, map);
if (x86DataIsSubset(&host_model->data, &feature->data))
if (supported < 0)
goto cleanup;
else if (supported)
guest->features[i].policy = VIR_CPU_FEATURE_REQUIRE;
else
guest->features[i].policy = VIR_CPU_FEATURE_DISABLE;
@ -2646,23 +2664,11 @@ x86HasFeature(const virCPUData *data,
const char *name)
{
virCPUx86MapPtr map;
virCPUx86FeaturePtr feature;
int ret = -1;
if (!(map = virCPUx86GetMap()))
return -1;
if (!(feature = x86FeatureFind(map, name)) &&
!(feature = x86FeatureFindInternal(name))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown CPU feature %s"), name);
goto cleanup;
}
ret = x86DataIsSubset(&data->data.x86, &feature->data) ? 1 : 0;
cleanup:
return ret;
return x86FeatureInData(name, &data->data.x86, map);
}
static int