[Qemu-devel] [PULL 3/3] target-i386: Reject invalid CPU feature names on the command-line

[Andreas Färber]

From: Eduardo Habkost <address@hidden>

Instead of simply printing a warning, report an error when invalid CPU
options are provided on the CPU model string.

Signed-off-by: Eduardo Habkost <address@hidden>
Reviewed-by: Igor Mammedov <address@hidden>
Signed-off-by: Andreas Färber <address@hidden>
---
 target-i386/cpu.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 60d0dd5..88b64d8 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -592,7 +592,8 @@ static bool lookup_feature(uint32_t *pval, const char *s, 
const char *e,
 }
 
 static void add_flagname_to_bitmaps(const char *flagname,
-                                    FeatureWordArray words)
+                                    FeatureWordArray words,
+                                    Error **errp)
 {
     FeatureWord w;
     for (w = 0; w < FEATURE_WORDS; w++) {
@@ -603,7 +604,7 @@ static void add_flagname_to_bitmaps(const char *flagname,
         }
     }
     if (w == FEATURE_WORDS) {
-        fprintf(stderr, "CPU feature %s not found\n", flagname);
+        error_setg(errp, "CPU feature %s not found", flagname);
     }
 }
 
@@ -1254,6 +1255,9 @@ void x86_cpu_compat_set_features(const char *cpu_model, 
FeatureWord w,
     }
 }
 
+static uint32_t x86_cpu_get_supported_feature_word(FeatureWord w,
+                                                   bool migratable_only);
+
 #ifdef CONFIG_KVM
 
 static int cpu_x86_fill_model_id(char *str)
@@ -1310,9 +1314,6 @@ static void host_x86_cpu_class_init(ObjectClass *oc, void 
*data)
     dc->props = host_x86_cpu_properties;
 }
 
-static uint32_t x86_cpu_get_supported_feature_word(FeatureWord w,
-                                                   bool migratable_only);
-
 static void host_x86_cpu_initfn(Object *obj)
 {
     X86CPU *cpu = X86_CPU(obj);
@@ -1761,9 +1762,9 @@ static void x86_cpu_parse_featurestr(CPUState *cs, char 
*features,
     while (featurestr) {
         char *val;
         if (featurestr[0] == '+') {
-            add_flagname_to_bitmaps(featurestr + 1, plus_features);
+            add_flagname_to_bitmaps(featurestr + 1, plus_features, &local_err);
         } else if (featurestr[0] == '-') {
-            add_flagname_to_bitmaps(featurestr + 1, minus_features);
+            add_flagname_to_bitmaps(featurestr + 1, minus_features, 
&local_err);
         } else if ((val = strchr(featurestr, '='))) {
             *val = 0; val++;
             feat2prop(featurestr);
-- 
1.8.4.5