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Fri, 19 Jul 2024 18:18:24 +0000 (GMT) Received: from smtpav03.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B961558054; Fri, 19 Jul 2024 18:18:23 +0000 (GMT) Received: from li-d664314c-3171-11b2-a85c-fa8047ef35bd.ibm.com.com (unknown [9.67.171.109]) by smtpav03.wdc07v.mail.ibm.com (Postfix) with ESMTP; Fri, 19 Jul 2024 18:18:23 +0000 (GMT) From: Collin Walling To: qemu-s390x@nongnu.org, qemu-devel@nongnu.org Cc: thuth@redhat.com, david@redhat.com, wangyanan55@huawei.com, philmd@linaro.org, marcel.apfelbaum@gmail.com, eduardo@habkost.net, armbru@redhat.com, Jiri Denemark Subject: [PATCH v3] target/s390x: filter deprecated properties based on model expansion type Date: Fri, 19 Jul 2024 14:17:41 -0400 Message-ID: <20240719181741.35146-1-walling@linux.ibm.com> X-Mailer: git-send-email 2.45.1 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: dkuC05gT2nwbi-GrrvX_8iW4Q7cC4zxm X-Proofpoint-GUID: xYAqi1kR0nLnhkKVc4LPiWWSnNkERmKP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-19_06,2024-07-18_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 mlxlogscore=999 priorityscore=1501 phishscore=0 impostorscore=0 mlxscore=0 spamscore=0 adultscore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407190134 Received-SPF: pass client-ip=148.163.156.1; envelope-from=walling@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 Suggested-by: Jiri Denemark Signed-off-by: Collin Walling --- Changelog: 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 | 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 a8d9ec87f5..67086f006f 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..e28ecf7ab9 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; }