From: Collin Walling <wall...@linux.ibm.com>
Currently, there is no way to execute the query-cpu-model-expansion
command to retrieve a comprehenisve list of deprecated properties, as
the result is dependent per-model. To enable this, the expansion output
is modified as such:
When reporting a "full" CPU model, show the *entire* list of deprecated
properties regardless if they are supported on the model. A full
expansion outputs all known CPU model properties anyway, so it makes
sense to report all deprecated properties here too.
This allows management apps to query a single model (e.g. host) to
acquire the full list of deprecated properties.
Additionally, when reporting a "static" CPU model, the command will
only show deprecated properties that are a subset of the model's
*enabled* properties. This is more accurate than how the query was
handled before, which blindly reported deprecated properties that
were never otherwise introduced for certain models.
Acked-by: David Hildenbrand <da...@redhat.com>
Suggested-by: Jiri Denemark <jdene...@redhat.com>
Signed-off-by: Collin Walling <wall...@linux.ibm.com>
Message-ID: <20240719181741.35146-1-wall...@linux.ibm.com>
Signed-off-by: Thomas Huth <th...@redhat.com>
---
qapi/machine-target.json | 5 +++--
target/s390x/cpu_models_sysemu.c | 16 +++++++++-------
2 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/qapi/machine-target.json b/qapi/machine-target.json
index 7edb876b5c..a552e2b0ce 100644
--- a/qapi/machine-target.json
+++ b/qapi/machine-target.json
@@ -21,8 +21,9 @@
# @props: a dictionary of QOM properties to be applied
#
# @deprecated-props: a list of properties that are flagged as deprecated
-# by the CPU vendor. These props are a subset of the full model's
-# definition list of properties. (since 9.1)
+# by the CPU vendor. These properties are either a subset of the
+# properties enabled on the CPU model, or a set of properties
+# deprecated across all models for the architecture.
#
# Since: 2.8
##
diff --git a/target/s390x/cpu_models_sysemu.c b/target/s390x/cpu_models_sysemu.c
index 977fbc6522..94dd798b4c 100644
--- a/target/s390x/cpu_models_sysemu.c
+++ b/target/s390x/cpu_models_sysemu.c
@@ -174,11 +174,15 @@ static void cpu_info_from_model(CpuModelInfo *info, const
S390CPUModel *model,
bool delta_changes)
{
QDict *qdict = qdict_new();
- S390FeatBitmap bitmap;
+ S390FeatBitmap bitmap, deprecated;
/* always fallback to the static base model */
info->name = g_strdup_printf("%s-base", model->def->name);
+ /* features flagged as deprecated */
+ bitmap_zero(deprecated, S390_FEAT_MAX);
+ s390_get_deprecated_features(deprecated);
+
if (delta_changes) {
/* features deleted from the base feature set */
bitmap_andnot(bitmap, model->def->base_feat, model->features,
@@ -193,6 +197,9 @@ static void cpu_info_from_model(CpuModelInfo *info, const
S390CPUModel *model,
if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
}
+
+ /* deprecated features that are a subset of the model's enabled
features */
+ bitmap_and(deprecated, deprecated, model->features, S390_FEAT_MAX);
} else {
/* expand all features */
s390_feat_bitmap_to_ascii(model->features, qdict,
@@ -207,12 +214,7 @@ static void cpu_info_from_model(CpuModelInfo *info, const
S390CPUModel *model,
info->props = QOBJECT(qdict);
}
- /* features flagged as deprecated */
- bitmap_zero(bitmap, S390_FEAT_MAX);
- s390_get_deprecated_features(bitmap);
-
- bitmap_and(bitmap, bitmap, model->def->full_feat, S390_FEAT_MAX);
- s390_feat_bitmap_to_ascii(bitmap, &info->deprecated_props, list_add_feat);
+ s390_feat_bitmap_to_ascii(deprecated, &info->deprecated_props,
list_add_feat);
info->has_deprecated_props = !!info->deprecated_props;
}
--
2.45.2
