From 04a8a3d76b171deb5eaf8318591e5cfaea3cc843 Mon Sep 17 00:00:00 2001

From: Eduardo Habkost <ehabkost@redhat.com>

Date: Thu, 23 Feb 2017 14:29:44 +0100

Subject: [PATCH 14/17] target-i386: Loop-based copying and setting/unsetting

 of feature words

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RH-Author: Eduardo Habkost <ehabkost@redhat.com>

Message-id: <20170223142945.17790-14-ehabkost@redhat.com>

Patchwork-id: 74045

O-Subject: [RHEL-7.4 qemu-kvm PATCH v2 13/14] target-i386: Loop-based copying and setting/unsetting of feature words

Bugzilla: 1382122

RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>

RH-Acked-by: Igor Mammedov <imammedo@redhat.com>

RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>

Now that we have the feature word arrays, we don't need to manually copy

each array item, we can simply iterate through each feature word.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

Signed-off-by: Andreas Färber <afaerber@suse.de>

(cherry picked from commit e1c224b4eb3b8693c230bb2762a959ae1f531f76)

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>

---

 target-i386/cpu.c | 44 ++++++++++----------------------------------

 1 file changed, 10 insertions(+), 34 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c

index d611062..010b95f 100644

--- a/target-i386/cpu.c

+++ b/target-i386/cpu.c

@@ -1755,6 +1755,7 @@ static inline void feat2prop(char *s)

 static void cpu_x86_parse_featurestr(X86CPU *cpu, char *features, Error **errp)

 {

     char *featurestr; /* Single 'key=value" string being parsed */

+    FeatureWord w;

     /* Features to be added */

     FeatureWordArray plus_features = { 0 };

     /* Features to be removed */

@@ -1844,28 +1845,11 @@ static void cpu_x86_parse_featurestr(X86CPU *cpu, char *features, Error **errp)

         }

         featurestr = strtok(NULL, ",");

     }

-    env->features[FEAT_1_EDX] |= plus_features[FEAT_1_EDX];

-    env->features[FEAT_1_ECX] |= plus_features[FEAT_1_ECX];

-    env->features[FEAT_8000_0001_EDX] |= plus_features[FEAT_8000_0001_EDX];

-    env->features[FEAT_8000_0001_ECX] |= plus_features[FEAT_8000_0001_ECX];

-    env->features[FEAT_C000_0001_EDX] |= plus_features[FEAT_C000_0001_EDX];

-    env->features[FEAT_KVM] |= plus_features[FEAT_KVM];

-    env->features[FEAT_SVM] |= plus_features[FEAT_SVM];

-    env->features[FEAT_7_0_EBX] |= plus_features[FEAT_7_0_EBX];

-    env->features[FEAT_7_0_ECX] |= plus_features[FEAT_7_0_ECX];

-    env->features[FEAT_7_0_EDX] |= plus_features[FEAT_7_0_EDX];

-    env->features[FEAT_XSAVE] |= plus_features[FEAT_XSAVE];

-    env->features[FEAT_1_EDX] &= ~minus_features[FEAT_1_EDX];

-    env->features[FEAT_1_ECX] &= ~minus_features[FEAT_1_ECX];

-    env->features[FEAT_8000_0001_EDX] &= ~minus_features[FEAT_8000_0001_EDX];

-    env->features[FEAT_8000_0001_ECX] &= ~minus_features[FEAT_8000_0001_ECX];

-    env->features[FEAT_C000_0001_EDX] &= ~minus_features[FEAT_C000_0001_EDX];

-    env->features[FEAT_KVM] &= ~minus_features[FEAT_KVM];

-    env->features[FEAT_SVM] &= ~minus_features[FEAT_SVM];

-    env->features[FEAT_7_0_EBX] &= ~minus_features[FEAT_7_0_EBX];

-    env->features[FEAT_7_0_ECX] &= ~minus_features[FEAT_7_0_ECX];

-    env->features[FEAT_7_0_EDX] &= ~minus_features[FEAT_7_0_EDX];

-    env->features[FEAT_XSAVE] &= ~minus_features[FEAT_XSAVE];

+

+    for (w = 0; w < FEATURE_WORDS; w++) {

+        env->features[w] |= plus_features[w];

+        env->features[w] &= ~minus_features[w];

+    }

 out:

     return;

@@ -1974,6 +1958,7 @@ static void cpu_x86_register(X86CPU *cpu, const char *name, Error **errp)

 {

     CPUX86State *env = &cpu->env;

     x86_def_t def1, *def = &def;;

+    FeatureWord w;

     memset(def, 0, sizeof(*def));

@@ -1992,21 +1977,12 @@ static void cpu_x86_register(X86CPU *cpu, const char *name, Error **errp)

     object_property_set_int(OBJECT(cpu), def->family, "family", errp);

     object_property_set_int(OBJECT(cpu), def->model, "model", errp);

     object_property_set_int(OBJECT(cpu), def->stepping, "stepping", errp);

-    env->features[FEAT_1_EDX] = def->features[FEAT_1_EDX];

-    env->features[FEAT_1_ECX] = def->features[FEAT_1_ECX];

-    env->features[FEAT_8000_0001_EDX] = def->features[FEAT_8000_0001_EDX];

-    env->features[FEAT_8000_0001_ECX] = def->features[FEAT_8000_0001_ECX];

     object_property_set_int(OBJECT(cpu), def->xlevel, "xlevel", errp);

-    env->features[FEAT_KVM] = def->features[FEAT_KVM];

-    env->features[FEAT_SVM] = def->features[FEAT_SVM];

-    env->features[FEAT_C000_0001_EDX] = def->features[FEAT_C000_0001_EDX];

-    env->features[FEAT_7_0_EBX] = def->features[FEAT_7_0_EBX];

-    env->features[FEAT_7_0_ECX] = def->features[FEAT_7_0_ECX];

-    env->features[FEAT_7_0_EDX] = def->features[FEAT_7_0_EDX];

-    env->features[FEAT_XSAVE] = def->features[FEAT_XSAVE];

     env->cpuid_xlevel2 = def->xlevel2;

-

     object_property_set_str(OBJECT(cpu), def->model_id, "model-id", errp);

+    for (w = 0; w < FEATURE_WORDS; w++) {

+        env->features[w] = def->features[w];

+    }

 }

 X86CPU *cpu_x86_create(const char *cpu_model, DeviceState *icc_bridge,

-- 

1.8.3.1