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Thu, 25 Jul 2024 18:40:04 +0000 (GMT) Received: from smtpav05.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EC0C158066; Thu, 25 Jul 2024 18:40:03 +0000 (GMT) Received: from li-d664314c-3171-11b2-a85c-fa8047ef35bd.pok.ibm.com (unknown [9.12.68.85]) by smtpav05.wdc07v.mail.ibm.com (Postfix) with ESMTP; Thu, 25 Jul 2024 18:40:03 +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 v4] target/s390x: filter deprecated properties based on model expansion type Date: Thu, 25 Jul 2024 14:39:09 -0400 Message-ID: <20240725183909.24144-1-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: b4Ne8WA4I1mCbaZwpgiDAuIvSzc5_f_D X-Proofpoint-GUID: T1zkmn_2K5lgY1y4o3gfSBGVgVq7hNST 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=2024-07-25_18,2024-07-25_03,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 bulkscore=0 lowpriorityscore=0 spamscore=0 impostorscore=0 mlxscore=0 priorityscore=1501 malwarescore=0 suspectscore=0 adultscore=0 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407250126 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 "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 Suggested-by: Jiri Denemark Signed-off-by: Collin Walling --- 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; }