[v15,01/11] s390x/cpu topology: adding s390 specificities to CPU topology

Message ID	20230201132051.126868-2-pmorel@linux.ibm.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <kvm-owner@vger.kernel.org> From: Pierre Morel <pmorel@linux.ibm.com> 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 v15 01/11] s390x/cpu topology: adding s390 specificities to CPU topology Date: Wed, 1 Feb 2023 14:20:41 +0100 Message-Id: <20230201132051.126868-2-pmorel@linux.ibm.com> In-Reply-To: <20230201132051.126868-1-pmorel@linux.ibm.com> References: <20230201132051.126868-1-pmorel@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	s390x: CPU Topology \| expand [v15,00/11] s390x: CPU Topology [v15,01/11] s390x/cpu topology: adding s390 specificities to CPU topology [v15,02/11] s390x/cpu topology: add topology entries on CPU hotplug [v15,03/11] target/s390x/cpu topology: handle STSI(15) and build the SYSIB [v15,04/11] s390x/sclp: reporting the maximum nested topology entries [v15,05/11] s390x/cpu topology: resetting the Topology-Change-Report [v15,06/11] s390x/cpu topology: interception of PTF instruction [v15,07/11] target/s390x/cpu topology: activating CPU topology [v15,08/11] qapi/s390x/cpu topology: x-set-cpu-topology monitor command [v15,09/11] machine: adding s390 topology to query-cpu-fast [v15,10/11] qapi/s390x/cpu topology: CPU_POLARITY_CHANGE qapi event [v15,11/11] docs/s390x/cpu topology: document s390x cpu topology

diff --git a/qapi/machine.json b/qapi/machine.json index b9228a5e46..3036117059 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -900,13 +900,15 @@ # 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 8.0) +# @book-id: book number within drawer/node/board the CPU belongs to (since 8.0) +# @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 @@ -916,6 +918,8 @@ ## { 'struct': 'CpuInstanceProperties', 'data': { '*node-id': 'int', + '*drawer-id': 'int', + '*book-id': 'int', '*socket-id': 'int', '*die-id': 'int', '*cluster-id': 'int', @@ -1465,6 +1469,10 @@ # # @cpus: number of virtual CPUs in the virtual machine # +# @drawers: number of drawers in the CPU topology (since 8.0) +# +# @books: number of books in the CPU topology (since 8.0) +# # @sockets: number of sockets in the CPU topology # # @dies: number of dies per socket in the CPU topology @@ -1481,6 +1489,8 @@ ## { '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..7a84b30a21 --- /dev/null +++ b/include/hw/s390x/cpu-topology.h @@ -0,0 +1,24 @@ +/* + * 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 + +enum s390_topology_polarity { + POLARITY_HORIZONTAL, + POLARITY_VERTICAL, + POLARITY_VERTICAL_LOW = 1, + POLARITY_VERTICAL_MEDIUM, + POLARITY_VERTICAL_HIGH, + POLARITY_MAX, +}; + +#endif diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h index 7d6d01325b..d654267a71 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..b8233df5a9 100644 --- a/hw/core/machine-smp.c +++ b/hw/core/machine-smp.c @@ -31,6 +31,14 @@ 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) { @@ -73,6 +81,8 @@ 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 +95,8 @@ 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 +123,19 @@ 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 +149,41 @@ 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 +194,8 @@ 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 616f3a207c..e38f99230b 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -828,6 +828,8 @@ 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, @@ -1093,6 +1095,8 @@ 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 f22f61b8b6..f3cc845d3b 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -733,6 +733,8 @@ 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 9177d95d4e..05e1f33fa5 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -727,6 +727,12 @@ 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..828e8b8fce 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("polarity", S390CPU, env.entitlement, + POLARITY_VERTICAL_MEDIUM), #endif DEFINE_PROP_END_OF_LIST() }; diff --git a/qemu-options.hx b/qemu-options.hx index d59d19704b..131687c6dc 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"

[v15,01/11] s390x/cpu topology: adding s390 specificities to CPU topology

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