[PATCH v2] target-i386: Improve x86_cpu_list output

[Jan Kiszka <jan.kiszka@siemens.com>]

Several issues fixed:
 - We were missing a bunch of feature lists. Fix this by simply dumping
   the meta list feature_word_info.
 - kvm_enabled() cannot be true at this point because accelerators are
   initialized much later during init. Also, hiding this makes it very
   hard to discover for users. Simply dump unconditionally if CONFIG_KVM
   is set.
 - Add explanation for "host" CPU type.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---

Changes in v2:
 - Do not dump "host" type if CONFIG_KVM is not set
 - Explain that "host" depends on KVM mode

 target-i386/cpu.c |   23 ++++++++++++-----------
 1 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 5582e5f..b4189c3 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1463,18 +1463,19 @@ void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf)
         snprintf(buf, sizeof(buf), "%s", def->name);
         (*cpu_fprintf)(f, "x86 %16s  %-48s\n", buf, def->model_id);
     }
-    if (kvm_enabled()) {
-        (*cpu_fprintf)(f, "x86 %16s\n", "[host]");
-    }
+#ifdef CONFIG_KVM
+    (*cpu_fprintf)(f, "x86 %16s  %-48s\n", "host",
+                   "KVM processor with all supported host features "
+                   "(only available in KVM mode)");
+#endif
+
     (*cpu_fprintf)(f, "\nRecognized CPUID flags:\n");
-    listflags(buf, sizeof(buf), (uint32_t)~0, feature_name, 1);
-    (*cpu_fprintf)(f, "  %s\n", buf);
-    listflags(buf, sizeof(buf), (uint32_t)~0, ext_feature_name, 1);
-    (*cpu_fprintf)(f, "  %s\n", buf);
-    listflags(buf, sizeof(buf), (uint32_t)~0, ext2_feature_name, 1);
-    (*cpu_fprintf)(f, "  %s\n", buf);
-    listflags(buf, sizeof(buf), (uint32_t)~0, ext3_feature_name, 1);
-    (*cpu_fprintf)(f, "  %s\n", buf);
+    for (i = 0; i < ARRAY_SIZE(feature_word_info); i++) {
+        FeatureWordInfo *fw = &feature_word_info[i];
+
+        listflags(buf, sizeof(buf), (uint32_t)~0, fw->feat_names, 1);
+        (*cpu_fprintf)(f, "  %s\n", buf);
+    }
 }
 
 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
-- 
1.7.3.4