Introduce x86_cpu_compat_set_level(), which can be used by machine-type
init functions to keep compatibility when CPU models are changed.
Signed-off-by: Eduardo Habkost <ehabk...@redhat.com>
---
target-i386/cpu.c | 22 ++++++++++++++++++++++
target-i386/cpu.h | 1 +
2 files changed, 23 insertions(+)
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index a207474..6ef5842 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -996,6 +996,28 @@ void x86_cpu_compat_set_features(const char *cpu_model,
FeatureWord w,
}
}
+/**
+ * x86_cpu_compat_set_level:
+ * @cpu_model: CPU model name to be changed. If NULL, all CPU models are
changed
+ * @level: New value for 'level' field on CPU model
+ *
+ * Change CPU model 'level' field for compatibility.
+ *
+ * This function may be used by machine-type compatibility functions
+ * to set a backwards-compatible value for the 'level' field on CPU models.
+ */
+void x86_cpu_compat_set_level(const char *cpu_model, uint32_t level)
+{
+ x86_def_t *def;
+ int i;
+ for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); i++) {
+ def = &builtin_x86_defs[i];
+ if (!cpu_model || !strcmp(cpu_model, def->name)) {
+ def->level = level;
+ }
+ }
+}
+
#ifdef CONFIG_KVM
static int cpu_x86_fill_model_id(char *str)
{
diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 60581e1..86a5988 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -1256,6 +1256,7 @@ void disable_kvm_pv_eoi(void);
void x86_cpu_compat_set_features(const char *cpu_model, FeatureWord w,
uint32_t feat_add, uint32_t feat_remove);
+void x86_cpu_compat_set_level(const char *cpu_model, uint32_t level);
/* Return name of 32-bit register, from a R_* constant */
--
1.8.1.4
