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i386: x86_cpu_list_feature_names() function 

Extract feature name listing code from
x86_cpu_class_check_missing_features().  It will be reused to
return information about CPU filtered features at runtime.

Message-Id: <20190422234742.15780-2-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Eduardo Habkost 2019-04-22 20:47:41 -03:00
parent a578cdfbdd
commit 5a853fc57a
1 changed files with 22 additions and 13 deletions
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35
target/i386/cpu.c
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@ -3671,6 +3671,27 @@ static void x86_cpu_parse_featurestr(const char *typename, char *features,
static void x86_cpu_expand_features(X86CPU *cpu, Error **errp);
static int x86_cpu_filter_features(X86CPU *cpu);
/* Build a list with the name of all features on a feature word array */
static void x86_cpu_list_feature_names(FeatureWordArray features,
strList **feat_names)
{
FeatureWord w;
strList **next = feat_names;
for (w = 0; w < FEATURE_WORDS; w++) {
uint32_t filtered = features[w];
int i;
for (i = 0; i < 32; i++) {
if (filtered & (1UL << i)) {
strList *new = g_new0(strList, 1);
new->value = g_strdup(x86_cpu_feature_name(w, i));
*next = new;
next = &new->next;
}
}
}
}
/* Check for missing features that may prevent the CPU class from
* running using the current machine and accelerator.
*/
@ -3678,7 +3699,6 @@ static void x86_cpu_class_check_missing_features(X86CPUClass *xcc,
strList **missing_feats)
{
X86CPU *xc;
FeatureWord w;
Error *err = NULL;
strList **next = missing_feats;
@ -3705,18 +3725,7 @@ static void x86_cpu_class_check_missing_features(X86CPUClass *xcc,
x86_cpu_filter_features(xc);
for (w = 0; w < FEATURE_WORDS; w++) {
uint32_t filtered = xc->filtered_features[w];
int i;
for (i = 0; i < 32; i++) {
if (filtered & (1UL << i)) {
strList *new = g_new0(strList, 1);
new->value = g_strdup(x86_cpu_feature_name(w, i));
*next = new;
next = &new->next;
}
}
}
x86_cpu_list_feature_names(xc->filtered_features, next);
object_unref(OBJECT(xc));
}