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[213.175.37.10]) by smtp.gmail.com with ESMTPSA id m12-20020a17090677cc00b006df85d9a924sm8312272ejn.217.2022.03.30.06.18.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Mar 2022 06:18:33 -0700 (PDT) Date: Wed, 30 Mar 2022 15:18:32 +0200 From: Igor Mammedov To: Gavin Shan Subject: Re: [PATCH v3 1/4] hw/arm/virt: Consider SMP configuration in CPU topology Message-ID: <20220330151832.3da04abf@redhat.com> In-Reply-To: <20220323072438.71815-2-gshan@redhat.com> References: <20220323072438.71815-1-gshan@redhat.com> <20220323072438.71815-2-gshan@redhat.com> X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.31; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=imammedo@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=170.10.129.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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: , Cc: peter.maydell@linaro.org, drjones@redhat.com, richard.henderson@linaro.org, qemu-devel@nongnu.org, zhenyzha@redhat.com, wangyanan55@huawei.com, qemu-arm@nongnu.org, shan.gavin@gmail.com Errors-To: qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org Sender: "Qemu-devel" X-TUID: qzUCtrREc+jD On Wed, 23 Mar 2022 15:24:35 +0800 Gavin Shan wrote: > Currently, the SMP configuration isn't considered when the CPU > topology is populated. In this case, it's impossible to provide > the default CPU-to-NUMA mapping or association based on the socket > ID of the given CPU. > > This takes account of SMP configuration when the CPU topology > is populated. The die ID for the given CPU isn't assigned since > it's not supported on arm/virt machine yet. Besides, the cluster > ID for the given CPU is assigned because it has been supported > on arm/virt machine. > > Signed-off-by: Gavin Shan > --- > hw/arm/virt.c | 11 +++++++++++ > qapi/machine.json | 6 ++++-- > 2 files changed, 15 insertions(+), 2 deletions(-) > > diff --git a/hw/arm/virt.c b/hw/arm/virt.c > index d2e5ecd234..064eac42f7 100644 > --- a/hw/arm/virt.c > +++ b/hw/arm/virt.c > @@ -2505,6 +2505,7 @@ static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms) > int n; > unsigned int max_cpus = ms->smp.max_cpus; > VirtMachineState *vms = VIRT_MACHINE(ms); > + MachineClass *mc = MACHINE_GET_CLASS(vms); > > if (ms->possible_cpus) { > assert(ms->possible_cpus->len == max_cpus); > @@ -2518,6 +2519,16 @@ static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms) > ms->possible_cpus->cpus[n].type = ms->cpu_type; > ms->possible_cpus->cpus[n].arch_id = > virt_cpu_mp_affinity(vms, n); > + > + assert(!mc->smp_props.dies_supported); > + ms->possible_cpus->cpus[n].props.has_socket_id = true; > + ms->possible_cpus->cpus[n].props.socket_id = > + n / (ms->smp.clusters * ms->smp.cores * ms->smp.threads); > + ms->possible_cpus->cpus[n].props.has_cluster_id = true; > + ms->possible_cpus->cpus[n].props.cluster_id = > + n / (ms->smp.cores * ms->smp.threads); > + ms->possible_cpus->cpus[n].props.has_core_id = true; > + ms->possible_cpus->cpus[n].props.core_id = n / ms->smp.threads; > ms->possible_cpus->cpus[n].props.has_thread_id = true; > ms->possible_cpus->cpus[n].props.thread_id = n; shouldn't be above values calculated similar to the way they are calculated in x86_topo_ids_from_idx()? /note '% foo' part/ > } > diff --git a/qapi/machine.json b/qapi/machine.json > index 42fc68403d..99c945f258 100644 > --- a/qapi/machine.json > +++ b/qapi/machine.json > @@ -868,10 +868,11 @@ > # @node-id: NUMA node ID the CPU belongs to > # @socket-id: socket number within node/board the CPU belongs to > # @die-id: die number within socket the CPU belongs to (since 4.1) > -# @core-id: core number within die the CPU belongs to > +# @cluster-id: cluster number within die the CPU belongs to > +# @core-id: core number within cluster the CPU belongs to > # @thread-id: thread number within core the CPU belongs to > # > -# Note: currently there are 5 properties that could be present > +# Note: currently there are 6 properties that could be present > # but management should be prepared to pass through other > # properties with device_add command to allow for future > # interface extension. This also requires the filed names to be kept in > @@ -883,6 +884,7 @@ > 'data': { '*node-id': 'int', > '*socket-id': 'int', > '*die-id': 'int', > + '*cluster-id': 'int', > '*core-id': 'int', > '*thread-id': 'int' > }