target/ppc: Remove "compat" property of server class POWER CPUs

This property has been deprecated since QEMU 5.0 by commit 22062e54bb68.
We only kept a legacy hack that internally converts "compat" into the
official "max-cpu-compat" property of the pseries machine type.

According to our deprecation policy, we could have removed it for QEMU 5.2
already. Do it now ; since ppc_cpu_parse_featurestr() now just calls the
generic parent_parse_features handler, drop it as well.

Users are supposed to use the "max-cpu-compat" property of the pseries
machine type instead.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <20201201131103.897430-1-groug@kaod.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

2 files changed, 0 insertions, 66 deletions

diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst
index 565389697e..09c8f380bc 100644
--- a/docs/system/deprecated.rst
+++ b/docs/system/deprecated.rst
@@ -281,13 +281,6 @@ a future version of QEMU. It's unclear whether anybody is still using
 CPU emulation in QEMU, and there are no test images available to make
 sure that the code is still working.
 
-``compat`` property of server class POWER CPUs (since 5.0)
-''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-The ``compat`` property used to set backwards compatibility modes for
-the processor has been deprecated. The ``max-cpu-compat`` property of
-the ``pseries`` machine type should be used instead.
-
 ``lm32`` CPUs (since 5.2.0)
 '''''''''''''''''''''''''''
 
diff --git a/target/ppc/translate_init.c.inc b/target/ppc/translate_init.c.inc
index 78cc8f043b..e4082cfde7 100644
--- a/target/ppc/translate_init.c.inc
+++ b/target/ppc/translate_init.c.inc
@@ -10470,63 +10470,6 @@ static ObjectClass *ppc_cpu_class_by_name(const char *name)
     return oc;
 }
 
-static void ppc_cpu_parse_featurestr(const char *type, char *features,
-                                     Error **errp)
-{
-    Object *machine = qdev_get_machine();
-    const PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(object_class_by_name(type));
-
-    if (!features) {
-        return;
-    }
-
-    if (object_property_find(machine, "max-cpu-compat")) {
-        int i;
-        char **inpieces;
-        char *s = features;
-        Error *local_err = NULL;
-        char *compat_str = NULL;
-
-        /*
-         * Backwards compatibility hack:
-         *
-         *   CPUs had a "compat=" property which didn't make sense for
-         *   anything except pseries.  It was replaced by "max-cpu-compat"
-         *   machine option.  This supports old command lines like
-         *       -cpu POWER8,compat=power7
-         *   By stripping the compat option and applying it to the machine
-         *   before passing it on to the cpu level parser.
-         */
-        inpieces = g_strsplit(features, ",", 0);
-        *s = '\0';
-        for (i = 0; inpieces[i]; i++) {
-            if (g_str_has_prefix(inpieces[i], "compat=")) {
-                warn_report_once("CPU 'compat' property is deprecated; "
-                    "use max-cpu-compat machine property instead");
-                compat_str = inpieces[i];
-                continue;
-            }
-            if ((i != 0) && (s != features)) {
-                s = g_stpcpy(s, ",");
-            }
-            s = g_stpcpy(s, inpieces[i]);
-        }
-
-        if (compat_str) {
-            char *v = compat_str + strlen("compat=");
-            object_property_set_str(machine, "max-cpu-compat", v, &local_err);
-        }
-        g_strfreev(inpieces);
-        if (local_err) {
-            error_propagate(errp, local_err);
-            return;
-        }
-    }
-
-    /* do property processing with generic handler */
-    pcc->parent_parse_features(type, features, errp);
-}
-
 PowerPCCPUClass *ppc_cpu_get_family_class(PowerPCCPUClass *pcc)
 {
     ObjectClass *oc = OBJECT_CLASS(pcc);
@@ -10905,8 +10848,6 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_reset(dc, ppc_cpu_reset, &pcc->parent_reset);
 
     cc->class_by_name = ppc_cpu_class_by_name;
-    pcc->parent_parse_features = cc->parse_features;
-    cc->parse_features = ppc_cpu_parse_featurestr;
     cc->has_work = ppc_cpu_has_work;
     cc->do_interrupt = ppc_cpu_do_interrupt;
     cc->cpu_exec_interrupt = ppc_cpu_exec_interrupt;