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

This property has been deprecated since QEMU 5.0 by commit 22062e54bb.
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>
stable-6.0
Greg Kurz 2020-12-01 14:11:03 +01:00 committed by David Gibson
parent bc370a659a
commit f518be3aa3
2 changed files with 0 additions and 66 deletions
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7
docs/system/deprecated.rst
View File

@ -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)
'''''''''''''''''''''''''''

59
target/ppc/translate_init.c.inc
View File

@ -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;