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Fri, 30 Jun 2023 09:17:56 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B27642004B; Fri, 30 Jun 2023 09:17:54 +0000 (GMT) Received: from li-c6ac47cc-293c-11b2-a85c-d421c8e4747b.ibm.com.com (unknown [9.171.38.86]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 30 Jun 2023 09:17:54 +0000 (GMT) From: Pierre Morel To: qemu-s390x@nongnu.org Cc: qemu-devel@nongnu.org, borntraeger@de.ibm.com, pasic@linux.ibm.com, richard.henderson@linaro.org, david@redhat.com, thuth@redhat.com, cohuck@redhat.com, mst@redhat.com, pbonzini@redhat.com, kvm@vger.kernel.org, ehabkost@redhat.com, marcel.apfelbaum@gmail.com, eblake@redhat.com, armbru@redhat.com, seiden@linux.ibm.com, nrb@linux.ibm.com, nsg@linux.ibm.com, frankja@linux.ibm.com, berrange@redhat.com, clg@kaod.org Subject: [PATCH v21 01/20] s390x/cpu topology: add s390 specifics to CPU topology Date: Fri, 30 Jun 2023 11:17:33 +0200 Message-Id: <20230630091752.67190-2-pmorel@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230630091752.67190-1-pmorel@linux.ibm.com> References: <20230630091752.67190-1-pmorel@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: Dm5V-gs9kvxNRzwY90U_cIuYFFn97AjD X-Proofpoint-ORIG-GUID: dM-5hTJDk-Uibee8q2MpO8hgla7nJW5l X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-30_05,2023-06-30_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 clxscore=1015 lowpriorityscore=0 malwarescore=0 bulkscore=0 phishscore=0 impostorscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306300076 Received-SPF: pass client-ip=148.163.156.1; envelope-from=pmorel@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_H5=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=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 S390 adds two new SMP levels, drawers and books to the CPU topology. The S390 CPU have specific topology features like dedication and entitlement to give to the guest indications on the host vCPUs scheduling and help the guest take the best decisions on the scheduling of threads on the vCPUs. Let us provide the SMP properties with books and drawers levels and S390 CPU with dedication and entitlement, Signed-off-by: Pierre Morel Reviewed-by: Nina Schoetterl-Glausch --- qapi/machine-common.json | 22 +++++++++++++ qapi/machine.json | 21 ++++++++++--- include/hw/boards.h | 10 +++++- include/hw/qdev-properties-system.h | 4 +++ target/s390x/cpu.h | 6 ++++ hw/core/machine-smp.c | 48 ++++++++++++++++++++++++----- hw/core/machine.c | 4 +++ hw/core/qdev-properties-system.c | 13 ++++++++ hw/s390x/s390-virtio-ccw.c | 2 ++ softmmu/vl.c | 6 ++++ target/s390x/cpu.c | 7 +++++ qapi/meson.build | 1 + qemu-options.hx | 7 +++-- 13 files changed, 137 insertions(+), 14 deletions(-) create mode 100644 qapi/machine-common.json diff --git a/qapi/machine-common.json b/qapi/machine-common.json new file mode 100644 index 0000000000..bc0d76829c --- /dev/null +++ b/qapi/machine-common.json @@ -0,0 +1,22 @@ +# -*- Mode: Python -*- +# vim: filetype=python +# +# This work is licensed under the terms of the GNU GPL, version 2 or later. +# See the COPYING file in the top-level directory. + +## +# = Machines S390 data types +## + +## +# @CpuS390Entitlement: +# +# An enumeration of cpu entitlements that can be assumed by a virtual +# S390 CPU +# +# Since: 8.1 +## +{ 'enum': 'CpuS390Entitlement', + 'prefix': 'S390_CPU_ENTITLEMENT', + 'data': [ 'auto', 'low', 'medium', 'high' ] } + diff --git a/qapi/machine.json b/qapi/machine.json index a08b6576ca..08245beea1 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -9,6 +9,7 @@ ## { 'include': 'common.json' } +{ 'include': 'machine-common.json' } ## # @SysEmuTarget: @@ -71,8 +72,8 @@ # # @thread-id: ID of the underlying host thread # -# @props: properties describing to which node/socket/core/thread -# virtual CPU belongs to, provided if supported by board +# @props: properties describing to which node/drawer/book/socket/core/thread +# virtual CPU belongs to, provided if supported by board # # @target: the QEMU system emulation target, which determines which # additional fields will be listed (since 3.0) @@ -901,7 +902,11 @@ # # @node-id: NUMA node ID the CPU belongs to # -# @socket-id: socket number within node/board the CPU belongs to +# @drawer-id: drawer number within node/board the CPU belongs to (since 8.1) +# +# @book-id: book number within drawer/node/board the CPU belongs to (since 8.1) +# +# @socket-id: socket number within book/node/board the CPU belongs to # # @die-id: die number within socket the CPU belongs to (since 4.1) # @@ -912,7 +917,7 @@ # # @thread-id: thread number within core the CPU belongs to # -# Note: currently there are 6 properties that could be present but +# Note: currently there are 8 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 sync with the @@ -922,6 +927,8 @@ ## { 'struct': 'CpuInstanceProperties', 'data': { '*node-id': 'int', + '*drawer-id': 'int', + '*book-id': 'int', '*socket-id': 'int', '*die-id': 'int', '*cluster-id': 'int', @@ -1480,6 +1487,10 @@ # # @cpus: number of virtual CPUs in the virtual machine # +# @drawers: number of drawers in the CPU topology (since 8.1) +# +# @books: number of books in the CPU topology (since 8.1) +# # @sockets: number of sockets in the CPU topology # # @dies: number of dies per socket in the CPU topology @@ -1498,6 +1509,8 @@ ## { 'struct': 'SMPConfiguration', 'data': { '*cpus': 'int', + '*drawers': 'int', + '*books': 'int', '*sockets': 'int', '*dies': 'int', '*clusters': 'int', diff --git a/include/hw/boards.h b/include/hw/boards.h index 6b267c21ce..306699df3c 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -131,12 +131,16 @@ typedef struct { * @clusters_supported - whether clusters are supported by the machine * @has_clusters - whether clusters are explicitly specified in the user * provided SMP configuration + * @books_supported - whether books are supported by the machine + * @drawers_supported - whether drawers are supported by the machine */ typedef struct { bool prefer_sockets; bool dies_supported; bool clusters_supported; bool has_clusters; + bool books_supported; + bool drawers_supported; } SMPCompatProps; /** @@ -305,7 +309,9 @@ typedef struct DeviceMemoryState { /** * CpuTopology: * @cpus: the number of present logical processors on the machine - * @sockets: the number of sockets on the machine + * @drawers: the number of drawers on the machine + * @books: the number of books in one drawer + * @sockets: the number of sockets in one book * @dies: the number of dies in one socket * @clusters: the number of clusters in one die * @cores: the number of cores in one cluster @@ -314,6 +320,8 @@ typedef struct DeviceMemoryState { */ typedef struct CpuTopology { unsigned int cpus; + unsigned int drawers; + unsigned int books; unsigned int sockets; unsigned int dies; unsigned int clusters; diff --git a/include/hw/qdev-properties-system.h b/include/hw/qdev-properties-system.h index 0ac327ae60..e4f8a13afc 100644 --- a/include/hw/qdev-properties-system.h +++ b/include/hw/qdev-properties-system.h @@ -22,6 +22,7 @@ extern const PropertyInfo qdev_prop_audiodev; extern const PropertyInfo qdev_prop_off_auto_pcibar; extern const PropertyInfo qdev_prop_pcie_link_speed; extern const PropertyInfo qdev_prop_pcie_link_width; +extern const PropertyInfo qdev_prop_cpus390entitlement; #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d) \ DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_pci_devfn, int32_t) @@ -73,5 +74,8 @@ extern const PropertyInfo qdev_prop_pcie_link_width; #define DEFINE_PROP_UUID_NODEFAULT(_name, _state, _field) \ DEFINE_PROP(_name, _state, _field, qdev_prop_uuid, QemuUUID) +#define DEFINE_PROP_CPUS390ENTITLEMENT(_n, _s, _f, _d) \ + DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_cpus390entitlement, \ + CpuS390Entitlement) #endif diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h index eb5b65b7d3..7ebd5e05b6 100644 --- a/target/s390x/cpu.h +++ b/target/s390x/cpu.h @@ -30,6 +30,7 @@ #include "exec/cpu-defs.h" #include "qemu/cpu-float.h" #include "tcg/tcg_s390x.h" +#include "qapi/qapi-types-machine-common.h" #define ELF_MACHINE_UNAME "S390X" @@ -130,6 +131,11 @@ struct CPUArchState { #if !defined(CONFIG_USER_ONLY) uint32_t core_id; /* PoP "CPU address", same as cpu_index */ + int32_t socket_id; + int32_t book_id; + int32_t drawer_id; + bool dedicated; + CpuS390Entitlement entitlement; /* Used only for vertical polarization */ uint64_t cpuid; #endif diff --git a/hw/core/machine-smp.c b/hw/core/machine-smp.c index 89fe0cda42..68f8545c21 100644 --- a/hw/core/machine-smp.c +++ b/hw/core/machine-smp.c @@ -33,6 +33,14 @@ static char *cpu_hierarchy_to_string(MachineState *ms) MachineClass *mc = MACHINE_GET_CLASS(ms); GString *s = g_string_new(NULL); + if (mc->smp_props.drawers_supported) { + g_string_append_printf(s, "drawers (%u) * ", ms->smp.drawers); + } + + if (mc->smp_props.books_supported) { + g_string_append_printf(s, "books (%u) * ", ms->smp.books); + } + g_string_append_printf(s, "sockets (%u)", ms->smp.sockets); if (mc->smp_props.dies_supported) { @@ -75,6 +83,8 @@ void machine_parse_smp_config(MachineState *ms, { MachineClass *mc = MACHINE_GET_CLASS(ms); unsigned cpus = config->has_cpus ? config->cpus : 0; + unsigned drawers = config->has_drawers ? config->drawers : 0; + unsigned books = config->has_books ? config->books : 0; unsigned sockets = config->has_sockets ? config->sockets : 0; unsigned dies = config->has_dies ? config->dies : 0; unsigned clusters = config->has_clusters ? config->clusters : 0; @@ -87,6 +97,8 @@ void machine_parse_smp_config(MachineState *ms, * explicit configuration like "cpus=0" is not allowed. */ if ((config->has_cpus && config->cpus == 0) || + (config->has_drawers && config->drawers == 0) || + (config->has_books && config->books == 0) || (config->has_sockets && config->sockets == 0) || (config->has_dies && config->dies == 0) || (config->has_clusters && config->clusters == 0) || @@ -113,6 +125,19 @@ void machine_parse_smp_config(MachineState *ms, dies = dies > 0 ? dies : 1; clusters = clusters > 0 ? clusters : 1; + if (!mc->smp_props.books_supported && books > 1) { + error_setg(errp, "books not supported by this machine's CPU topology"); + return; + } + books = books > 0 ? books : 1; + + if (!mc->smp_props.drawers_supported && drawers > 1) { + error_setg(errp, + "drawers not supported by this machine's CPU topology"); + return; + } + drawers = drawers > 0 ? drawers : 1; + /* compute missing values based on the provided ones */ if (cpus == 0 && maxcpus == 0) { sockets = sockets > 0 ? sockets : 1; @@ -126,33 +151,41 @@ void machine_parse_smp_config(MachineState *ms, if (sockets == 0) { cores = cores > 0 ? cores : 1; threads = threads > 0 ? threads : 1; - sockets = maxcpus / (dies * clusters * cores * threads); + sockets = maxcpus / + (drawers * books * dies * clusters * cores * threads); } else if (cores == 0) { threads = threads > 0 ? threads : 1; - cores = maxcpus / (sockets * dies * clusters * threads); + cores = maxcpus / + (drawers * books * sockets * dies * clusters * threads); } } else { /* prefer cores over sockets since 6.2 */ if (cores == 0) { sockets = sockets > 0 ? sockets : 1; threads = threads > 0 ? threads : 1; - cores = maxcpus / (sockets * dies * clusters * threads); + cores = maxcpus / + (drawers * books * sockets * dies * clusters * threads); } else if (sockets == 0) { threads = threads > 0 ? threads : 1; - sockets = maxcpus / (dies * clusters * cores * threads); + sockets = maxcpus / + (drawers * books * dies * clusters * cores * threads); } } /* try to calculate omitted threads at last */ if (threads == 0) { - threads = maxcpus / (sockets * dies * clusters * cores); + threads = maxcpus / + (drawers * books * sockets * dies * clusters * cores); } } - maxcpus = maxcpus > 0 ? maxcpus : sockets * dies * clusters * cores * threads; + maxcpus = maxcpus > 0 ? maxcpus : drawers * books * sockets * dies * + clusters * cores * threads; cpus = cpus > 0 ? cpus : maxcpus; ms->smp.cpus = cpus; + ms->smp.drawers = drawers; + ms->smp.books = books; ms->smp.sockets = sockets; ms->smp.dies = dies; ms->smp.clusters = clusters; @@ -163,7 +196,8 @@ void machine_parse_smp_config(MachineState *ms, mc->smp_props.has_clusters = config->has_clusters; /* sanity-check of the computed topology */ - if (sockets * dies * clusters * cores * threads != maxcpus) { + if (drawers * books * sockets * dies * clusters * cores * threads != + maxcpus) { g_autofree char *topo_msg = cpu_hierarchy_to_string(ms); error_setg(errp, "Invalid CPU topology: " "product of the hierarchy must match maxcpus: " diff --git a/hw/core/machine.c b/hw/core/machine.c index 46f8f9a2b0..719bc0de87 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -839,6 +839,8 @@ static void machine_get_smp(Object *obj, Visitor *v, const char *name, MachineState *ms = MACHINE(obj); SMPConfiguration *config = &(SMPConfiguration){ .has_cpus = true, .cpus = ms->smp.cpus, + .has_drawers = true, .drawers = ms->smp.drawers, + .has_books = true, .books = ms->smp.books, .has_sockets = true, .sockets = ms->smp.sockets, .has_dies = true, .dies = ms->smp.dies, .has_clusters = true, .clusters = ms->smp.clusters, @@ -1104,6 +1106,8 @@ static void machine_initfn(Object *obj) /* default to mc->default_cpus */ ms->smp.cpus = mc->default_cpus; ms->smp.max_cpus = mc->default_cpus; + ms->smp.drawers = 1; + ms->smp.books = 1; ms->smp.sockets = 1; ms->smp.dies = 1; ms->smp.clusters = 1; diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c index 6d5d43eda2..7f50ce9746 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -1147,3 +1147,16 @@ const PropertyInfo qdev_prop_uuid = { .set = set_uuid, .set_default_value = set_default_uuid_auto, }; + +/* --- s390 cpu entitlement policy --- */ + +QEMU_BUILD_BUG_ON(sizeof(CpuS390Entitlement) != sizeof(int)); + +const PropertyInfo qdev_prop_cpus390entitlement = { + .name = "CpuS390Entitlement", + .description = "low/medium (default)/high", + .enum_table = &CpuS390Entitlement_lookup, + .get = qdev_propinfo_get_enum, + .set = qdev_propinfo_set_enum, + .set_default_value = qdev_propinfo_set_default_value_enum, +}; diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 2dece8eab8..7540cc9093 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -737,6 +737,8 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data) mc->no_sdcard = 1; mc->max_cpus = S390_MAX_CPUS; mc->has_hotpluggable_cpus = true; + mc->smp_props.books_supported = true; + mc->smp_props.drawers_supported = true; assert(!mc->get_hotplug_handler); mc->get_hotplug_handler = s390_get_hotplug_handler; mc->cpu_index_to_instance_props = s390_cpu_index_to_props; diff --git a/softmmu/vl.c b/softmmu/vl.c index b0b96f67fa..802c3c0c22 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -725,6 +725,12 @@ static QemuOptsList qemu_smp_opts = { { .name = "cpus", .type = QEMU_OPT_NUMBER, + }, { + .name = "drawers", + .type = QEMU_OPT_NUMBER, + }, { + .name = "books", + .type = QEMU_OPT_NUMBER, }, { .name = "sockets", .type = QEMU_OPT_NUMBER, diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c index df167493c3..74405beb51 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -31,6 +31,7 @@ #include "qapi/qapi-types-machine.h" #include "sysemu/hw_accel.h" #include "hw/qdev-properties.h" +#include "hw/qdev-properties-system.h" #include "fpu/softfloat-helpers.h" #include "disas/capstone.h" #include "sysemu/tcg.h" @@ -292,6 +293,12 @@ static gchar *s390_gdb_arch_name(CPUState *cs) static Property s390x_cpu_properties[] = { #if !defined(CONFIG_USER_ONLY) DEFINE_PROP_UINT32("core-id", S390CPU, env.core_id, 0), + DEFINE_PROP_INT32("socket-id", S390CPU, env.socket_id, -1), + DEFINE_PROP_INT32("book-id", S390CPU, env.book_id, -1), + DEFINE_PROP_INT32("drawer-id", S390CPU, env.drawer_id, -1), + DEFINE_PROP_BOOL("dedicated", S390CPU, env.dedicated, false), + DEFINE_PROP_CPUS390ENTITLEMENT("entitlement", S390CPU, env.entitlement, + S390_CPU_ENTITLEMENT_AUTO), #endif DEFINE_PROP_END_OF_LIST() }; diff --git a/qapi/meson.build b/qapi/meson.build index 60a668b343..f81a37565c 100644 --- a/qapi/meson.build +++ b/qapi/meson.build @@ -36,6 +36,7 @@ qapi_all_modules = [ 'error', 'introspect', 'job', + 'machine-common', 'machine', 'machine-target', 'migration', diff --git a/qemu-options.hx b/qemu-options.hx index b57489d7ca..cbcce5dc9e 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -257,11 +257,14 @@ SRST ERST DEF("smp", HAS_ARG, QEMU_OPTION_smp, - "-smp [[cpus=]n][,maxcpus=maxcpus][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n" + "-smp [[cpus=]n][,maxcpus=maxcpus][,drawers=drawers][,books=books][,sockets=sockets]\n" + " [,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n" " set the number of initial CPUs to 'n' [default=1]\n" " maxcpus= maximum number of total CPUs, including\n" " offline CPUs for hotplug, etc\n" - " sockets= number of sockets on the machine board\n" + " drawers= number of drawers on the machine board\n" + " books= number of books in one drawer\n" + " sockets= number of sockets in one book\n" " dies= number of dies in one socket\n" " clusters= number of clusters in one die\n" " cores= number of cores in one cluster\n"