qapi/machine-target.json | 17 ++++++++++------- target/s390x/cpu_models_sysemu.c | 27 +++++++++++++++++++-------- 2 files changed, 29 insertions(+), 15 deletions(-)
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 "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 properties that were never introduced
for certain models.
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, the @deprecated-props array has been moved from the
CpuModelInfo struct to the CpuModelExpansionInfo struct, since the data
did not belong in the former.
Acked-by: David Hildenbrand <david@redhat.com>
Suggested-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Collin Walling <walling@linux.ibm.com>
---
Changelog:
v4
- @deprecated-props moved to CpuModelExpansionInfo
- deprecated features code moved from cpu_info_from_model to
qmp_query_cpu_model_expansion function
- reorganized commit message to mention "static" first and "full"
second, akin to how it's documented in the QAPI doc
v3
- Removed the 'note' and cleaned up documentation
- Revised commit message
v2
- Changed commit message
- Added documentation reflecting this change
- Made code changes that more accurately filter the deprecated
properties based on expansion type. This change makes it
so that the deprecated-properties reported for a static model
expansion are a subset of the model's properties instead of
the model's full-definition properties.
---
qapi/machine-target.json | 17 ++++++++++-------
target/s390x/cpu_models_sysemu.c | 27 +++++++++++++++++++--------
2 files changed, 29 insertions(+), 15 deletions(-)
diff --git a/qapi/machine-target.json b/qapi/machine-target.json
index a8d9ec87f5..3e711d4178 100644
--- a/qapi/machine-target.json
+++ b/qapi/machine-target.json
@@ -20,16 +20,11 @@
#
# @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)
-#
# Since: 2.8
##
{ 'struct': 'CpuModelInfo',
'data': { 'name': 'str',
- '*props': 'any',
- '*deprecated-props': ['str'] } }
+ '*props': 'any' } }
##
# @CpuModelExpansionType:
@@ -247,10 +242,18 @@
#
# @model: the expanded CpuModelInfo.
#
+# @deprecated-props: a list of properties that are flagged as deprecated
+# by the CPU vendor. The list depends on the CpuModelExpansionType:
+# "static" properties are a subset of the enabled-properties for
+# the expanded model; "full" properties are a set of properties
+# that are deprecated across all models for the architecture.
+# (since: 9.1).
+#
# Since: 2.8
##
{ 'struct': 'CpuModelExpansionInfo',
- 'data': { 'model': 'CpuModelInfo' },
+ 'data': { 'model': 'CpuModelInfo',
+ '*deprecated-props': ['str'] },
'if': { 'any': [ 'TARGET_S390X',
'TARGET_I386',
'TARGET_ARM',
diff --git a/target/s390x/cpu_models_sysemu.c b/target/s390x/cpu_models_sysemu.c
index 977fbc6522..44e7587acb 100644
--- a/target/s390x/cpu_models_sysemu.c
+++ b/target/s390x/cpu_models_sysemu.c
@@ -206,14 +206,6 @@ static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
} else {
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);
- info->has_deprecated_props = !!info->deprecated_props;
}
CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
@@ -224,6 +216,7 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
CpuModelExpansionInfo *expansion_info = NULL;
S390CPUModel s390_model;
bool delta_changes = false;
+ S390FeatBitmap deprecated_feats;
/* convert it to our internal representation */
cpu_model_from_info(&s390_model, model, "model", &err);
@@ -243,6 +236,24 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
expansion_info = g_new0(CpuModelExpansionInfo, 1);
expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
+
+ /* populate list of deprecated features */
+ bitmap_zero(deprecated_feats, S390_FEAT_MAX);
+ s390_get_deprecated_features(deprecated_feats);
+
+ if (delta_changes) {
+ /*
+ * Only populate deprecated features that are a
+ * subset of the features enabled on the CPU model.
+ */
+ bitmap_and(deprecated_feats, deprecated_feats,
+ s390_model.features, S390_FEAT_MAX);
+ }
+
+ s390_feat_bitmap_to_ascii(deprecated_feats,
+ &expansion_info->deprecated_props, list_add_feat);
+ expansion_info->has_deprecated_props = !!expansion_info->deprecated_props;
+
return expansion_info;
}
--
2.45.1On 25.07.24 20:39, Collin Walling wrote: > 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 "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 properties that were never introduced > for certain models. > > 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, the @deprecated-props array has been moved from the > CpuModelInfo struct to the CpuModelExpansionInfo struct, since the data > did not belong in the former. > > Acked-by: David Hildenbrand <david@redhat.com> > Suggested-by: Jiri Denemark <jdenemar@redhat.com> > Signed-off-by: Collin Walling <walling@linux.ibm.com> > --- > Hmmm, this does not apply on current master ... maybe because Thomas already merged part of it? -- Cheers, David / dhildenb
On 7/26/24 3:57 PM, David Hildenbrand wrote: > On 25.07.24 20:39, Collin Walling wrote: >> 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 "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 properties that were never introduced >> for certain models. >> >> 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, the @deprecated-props array has been moved from the >> CpuModelInfo struct to the CpuModelExpansionInfo struct, since the data >> did not belong in the former. >> >> Acked-by: David Hildenbrand <david@redhat.com> >> Suggested-by: Jiri Denemark <jdenemar@redhat.com> >> Signed-off-by: Collin Walling <walling@linux.ibm.com> >> --- >> > > Hmmm, this does not apply on current master ... maybe because Thomas > already merged part of it? > Uh oh, sorry about that. I'll fix this right now and post a v5 with a corrected rebase on master. -- Regards, Collin
On 26.07.24 22:00, Collin Walling wrote:
> On 7/26/24 3:57 PM, David Hildenbrand wrote:
>> On 25.07.24 20:39, Collin Walling wrote:
>>> 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 "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 properties that were never introduced
>>> for certain models.
>>>
>>> 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, the @deprecated-props array has been moved from the
>>> CpuModelInfo struct to the CpuModelExpansionInfo struct, since the data
>>> did not belong in the former.
>>>
>>> Acked-by: David Hildenbrand <david@redhat.com>
>>> Suggested-by: Jiri Denemark <jdenemar@redhat.com>
>>> Signed-off-by: Collin Walling <walling@linux.ibm.com>
>>> ---
>>>
>>
>> Hmmm, this does not apply on current master ... maybe because Thomas
>> already merged part of it?
>>
>
> Uh oh, sorry about that. I'll fix this right now and post a v5 with a
> corrected rebase on master.
It would be great if the changelog could then only describe the diff to
already-merged:
commit da5cd572710cc4ad7e2c653614a4ab1598b17e78
Author: Collin L. Walling <walling@linux.ibm.com>
Date: Thu Jul 25 14:39:09 2024 -0400
target/s390x: filter deprecated properties based on model expansion type
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 "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 properties that were never introduced
for certain models.
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, the @deprecated-props array has been moved from the
CpuModelInfo struct to the CpuModelExpansionInfo struct, since the data
did not belong in the former.
--
Cheers,
David / dhildenb
On 7/26/24 4:03 PM, David Hildenbrand wrote: > On 26.07.24 22:00, Collin Walling wrote: >> On 7/26/24 3:57 PM, David Hildenbrand wrote: >>> On 25.07.24 20:39, Collin Walling wrote: >>>> 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 "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 properties that were never introduced >>>> for certain models. >>>> >>>> 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, the @deprecated-props array has been moved from the >>>> CpuModelInfo struct to the CpuModelExpansionInfo struct, since the data >>>> did not belong in the former. >>>> >>>> Acked-by: David Hildenbrand <david@redhat.com> >>>> Suggested-by: Jiri Denemark <jdenemar@redhat.com> >>>> Signed-off-by: Collin Walling <walling@linux.ibm.com> >>>> --- >>>> >>> >>> Hmmm, this does not apply on current master ... maybe because Thomas >>> already merged part of it? >>> >> >> Uh oh, sorry about that. I'll fix this right now and post a v5 with a >> corrected rebase on master. > > It would be great if the changelog could then only describe the diff to > already-merged: > > commit da5cd572710cc4ad7e2c653614a4ab1598b17e78 > Author: Collin L. Walling <walling@linux.ibm.com> > Date: Thu Jul 25 14:39:09 2024 -0400 > > target/s390x: filter deprecated properties based on model expansion type > > 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 "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 properties that were never introduced > for certain models. > > 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, the @deprecated-props array has been moved from the > CpuModelInfo struct to the CpuModelExpansionInfo struct, since the data > did not belong in the former. > > Okay, yeah... a previous iteration was already merged: eed0e8ffa38f0695c0519508f6e4f5a3297cbd67. Since that patch describes the "static" and "full" expansion stuff, I'll rework the commit message for this one to explain that it moves the @deprecated-props from CpuModelInfo to CpuModelExpansionInfo. -- Regards, Collin
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