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Mon, 3 Apr 2023 16:29:18 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E74C120043; Mon, 3 Apr 2023 16:29:16 +0000 (GMT) Received: from li-c6ac47cc-293c-11b2-a85c-d421c8e4747b.ibm.com.com (unknown [9.179.22.128]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 3 Apr 2023 16:29:16 +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 v19 01/21] s390x/cpu topology: add s390 specifics to CPU topology Date: Mon, 3 Apr 2023 18:28:45 +0200 Message-Id: <20230403162905.17703-2-pmorel@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230403162905.17703-1-pmorel@linux.ibm.com> References: <20230403162905.17703-1-pmorel@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: -dXmDjQ9tn8wMtBcWLKXRD705y7RDNvR X-Proofpoint-GUID: ZPAuCWDzYz_DByDmWbqV8-D22dlYJSxz X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-03_13,2023-04-03_03,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 clxscore=1015 phishscore=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 impostorscore=0 adultscore=0 mlxscore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304030118 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, 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 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: Thomas Huth --- MAINTAINERS | 5 ++++ qapi/machine-common.json | 22 ++++++++++++++ qapi/machine-target.json | 12 ++++++++ qapi/machine.json | 17 +++++++++-- include/hw/boards.h | 10 ++++++- include/hw/s390x/cpu-topology.h | 15 ++++++++++ target/s390x/cpu.h | 5 ++++ hw/core/machine-smp.c | 53 ++++++++++++++++++++++++++++----- hw/core/machine.c | 4 +++ hw/s390x/s390-virtio-ccw.c | 2 ++ softmmu/vl.c | 6 ++++ target/s390x/cpu.c | 7 +++++ qapi/meson.build | 1 + qemu-options.hx | 7 +++-- 14 files changed, 152 insertions(+), 14 deletions(-) create mode 100644 qapi/machine-common.json create mode 100644 include/hw/s390x/cpu-topology.h diff --git a/MAINTAINERS b/MAINTAINERS index 5340de0515..9b1f80739e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1654,6 +1654,11 @@ F: hw/s390x/event-facility.c F: hw/s390x/sclp*.c L: qemu-s390x@nongnu.org +S390 CPU topology +M: Pierre Morel +S: Supported +F: include/hw/s390x/cpu-topology.h + X86 Machines ------------ PC diff --git a/qapi/machine-common.json b/qapi/machine-common.json new file mode 100644 index 0000000000..73ea38d976 --- /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': [ 'horizontal', 'low', 'medium', 'high' ] } + diff --git a/qapi/machine-target.json b/qapi/machine-target.json index 2e267fa458..42a6a40333 100644 --- a/qapi/machine-target.json +++ b/qapi/machine-target.json @@ -342,3 +342,15 @@ 'TARGET_S390X', 'TARGET_MIPS', 'TARGET_LOONGARCH64' ] } } + +## +# @CpuS390Polarization: +# +# An enumeration of cpu polarization that can be assumed by a virtual +# S390 CPU +# +# Since: 8.1 +## +{ 'enum': 'CpuS390Polarization', + 'prefix': 'S390_CPU_POLARIZATION', + 'data': [ 'horizontal', 'vertical' ] } diff --git a/qapi/machine.json b/qapi/machine.json index 604b686e59..1cdd83f3fd 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -9,6 +9,7 @@ ## { 'include': 'common.json' } +{ 'include': 'machine-common.json' } ## # @SysEmuTarget: @@ -70,7 +71,7 @@ # # @thread-id: ID of the underlying host thread # -# @props: properties describing to which node/socket/core/thread +# @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 @@ -902,13 +903,15 @@ # a CPU is being hotplugged. # # @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) # @cluster-id: cluster number within die the CPU belongs to (since 7.1) # @core-id: core number within cluster the CPU belongs to # @thread-id: thread number within core the CPU belongs to # -# Note: currently there are 6 properties that could be present +# 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 @@ -918,6 +921,8 @@ ## { 'struct': 'CpuInstanceProperties', 'data': { '*node-id': 'int', + '*drawer-id': 'int', + '*book-id': 'int', '*socket-id': 'int', '*die-id': 'int', '*cluster-id': 'int', @@ -1467,6 +1472,10 @@ # # @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 @@ -1483,6 +1492,8 @@ ## { '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 6fbbfd56c8..9ef0bb76cf 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; /** @@ -301,7 +305,9 @@ 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 @@ -310,6 +316,8 @@ 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/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h new file mode 100644 index 0000000000..83f31604cc --- /dev/null +++ b/include/hw/s390x/cpu-topology.h @@ -0,0 +1,15 @@ +/* + * CPU Topology + * + * Copyright IBM Corp. 2022 + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ +#ifndef HW_S390X_CPU_TOPOLOGY_H +#define HW_S390X_CPU_TOPOLOGY_H + +#define S390_TOPOLOGY_CPU_IFL 0x03 + +#endif diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h index 7d6d01325b..f2b2a38fe7 100644 --- a/target/s390x/cpu.h +++ b/target/s390x/cpu.h @@ -131,6 +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; + uint8_t 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 c3dab007da..6f5622a024 100644 --- a/hw/core/machine-smp.c +++ b/hw/core/machine-smp.c @@ -30,8 +30,19 @@ static char *cpu_hierarchy_to_string(MachineState *ms) { MachineClass *mc = MACHINE_GET_CLASS(ms); GString *s = g_string_new(NULL); + const char *multiply = " * ", *prefix = ""; - g_string_append_printf(s, "sockets (%u)", ms->smp.sockets); + if (mc->smp_props.drawers_supported) { + g_string_append_printf(s, "drawers (%u)", ms->smp.drawers); + prefix = multiply; + } + + if (mc->smp_props.books_supported) { + g_string_append_printf(s, "%sbooks (%u)", prefix, ms->smp.books); + prefix = multiply; + } + + g_string_append_printf(s, "%ssockets (%u)", prefix, ms->smp.sockets); if (mc->smp_props.dies_supported) { g_string_append_printf(s, " * dies (%u)", ms->smp.dies); @@ -73,6 +84,8 @@ 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; @@ -85,6 +98,8 @@ 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) || @@ -111,6 +126,19 @@ 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; @@ -124,33 +152,41 @@ 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; @@ -161,7 +197,8 @@ 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 1cf6822e06..41c7ba7027 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -831,6 +831,8 @@ 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, @@ -1096,6 +1098,8 @@ 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/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 503f212a31..1a9bcda8b6 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -736,6 +736,8 @@ 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 3340f63c37..bc293f8100 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -724,6 +724,12 @@ 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 b10a8541ff..57165fa3a0 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -37,6 +37,7 @@ #ifndef CONFIG_USER_ONLY #include "sysemu/reset.h" #endif +#include "hw/s390x/cpu-topology.h" #define CR0_RESET 0xE0UL #define CR14_RESET 0xC2000000UL; @@ -259,6 +260,12 @@ 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_UINT8("entitlement", S390CPU, env.entitlement, + S390_CPU_ENTITLEMENT__MAX), #endif DEFINE_PROP_END_OF_LIST() }; diff --git a/qapi/meson.build b/qapi/meson.build index fbdb442fdf..b5b01fb7b5 100644 --- a/qapi/meson.build +++ b/qapi/meson.build @@ -35,6 +35,7 @@ qapi_all_modules = [ 'error', 'introspect', 'job', + 'machine-common', 'machine', 'machine-target', 'migration', diff --git a/qemu-options.hx b/qemu-options.hx index d42f60fb91..4c79e153fb 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -250,11 +250,14 @@ 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"