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From 61aa52146679fb00f976bc1eb7884f1ddcf7342c Mon Sep 17 00:00:00 2001
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From: Eduardo Habkost <ehabkost@redhat.com>
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Date: Thu, 29 Aug 2019 20:55:31 +0100
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Subject: [PATCH 04/10] i386: x86_cpu_list_feature_names() function
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RH-Author: Eduardo Habkost <ehabkost@redhat.com>
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Message-id: <20190829205532.8302-2-ehabkost@redhat.com>
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Patchwork-id: 90200
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O-Subject: [RHEL-8.1.0 qemu-kvm PATCH 1/2] i386: x86_cpu_list_feature_names() function
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Bugzilla: 1747185
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
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Extract feature name listing code from
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x86_cpu_class_check_missing_features(). It will be reused to
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return information about CPU filtered features at runtime.
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Message-Id: <20190422234742.15780-2-ehabkost@redhat.com>
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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(cherry picked from commit 5a853fc57a0860da4a55d1448a77845f97e7a9be)
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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target/i386/cpu.c | 35 ++++++++++++++++++++++-------------
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1 file changed, 22 insertions(+), 13 deletions(-)
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diff --git a/target/i386/cpu.c b/target/i386/cpu.c
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index f71b044..934f11b 100644
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--- a/target/i386/cpu.c
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+++ b/target/i386/cpu.c
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@@ -3559,6 +3559,27 @@ static void x86_cpu_parse_featurestr(const char *typename, char *features,
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static void x86_cpu_expand_features(X86CPU *cpu, Error **errp);
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static int x86_cpu_filter_features(X86CPU *cpu);
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+/* Build a list with the name of all features on a feature word array */
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+static void x86_cpu_list_feature_names(FeatureWordArray features,
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+ strList **feat_names)
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+{
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+ FeatureWord w;
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+ strList **next = feat_names;
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+
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+ for (w = 0; w < FEATURE_WORDS; w++) {
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+ uint32_t filtered = features[w];
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+ int i;
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+ for (i = 0; i < 32; i++) {
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+ if (filtered & (1UL << i)) {
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+ strList *new = g_new0(strList, 1);
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+ new->value = g_strdup(x86_cpu_feature_name(w, i));
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+ *next = new;
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+ next = &new->next;
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+ }
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+ }
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+ }
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+}
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+
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/* Check for missing features that may prevent the CPU class from
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* running using the current machine and accelerator.
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*/
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@@ -3566,7 +3587,6 @@ static void x86_cpu_class_check_missing_features(X86CPUClass *xcc,
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strList **missing_feats)
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{
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X86CPU *xc;
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- FeatureWord w;
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Error *err = NULL;
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strList **next = missing_feats;
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@@ -3593,18 +3613,7 @@ static void x86_cpu_class_check_missing_features(X86CPUClass *xcc,
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x86_cpu_filter_features(xc);
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- for (w = 0; w < FEATURE_WORDS; w++) {
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- uint32_t filtered = xc->filtered_features[w];
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- int i;
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- for (i = 0; i < 32; i++) {
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- if (filtered & (1UL << i)) {
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- strList *new = g_new0(strList, 1);
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- new->value = g_strdup(x86_cpu_feature_name(w, i));
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- *next = new;
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- next = &new->next;
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- }
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- }
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- }
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+ x86_cpu_list_feature_names(xc->filtered_features, next);
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object_unref(OBJECT(xc));
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}
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--
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1.8.3.1
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