From: Liu Jingqi <jingqi....@intel.com> Add -numa hmat-lb option to provide System Locality Latency and Bandwidth Information. These memory attributes help to build System Locality Latency and Bandwidth Information Structure(s) in ACPI Heterogeneous Memory Attribute Table (HMAT).
Signed-off-by: Liu Jingqi <jingqi....@intel.com> Signed-off-by: Tao Xu <tao3...@intel.com> --- Changes in v15: - Change the QAPI version tag to 5.0 (Eric) Changes in v14: - Use qemu ctz64 and clz64 instead of builtin function - Improve help message in qemu-options.hx Changes in v13: - Reuse Garray to store the raw bandwidth and bandwidth data - Calculate common base unit using range bitmap (Igor) --- hw/core/numa.c | 136 ++++++++++++++++++++++++++++++++++++++++++ include/sysemu/numa.h | 68 +++++++++++++++++++++ qapi/machine.json | 94 ++++++++++++++++++++++++++++- qemu-options.hx | 49 ++++++++++++++- 4 files changed, 344 insertions(+), 3 deletions(-) diff --git a/hw/core/numa.c b/hw/core/numa.c index eba66ab768..f391760c20 100644 --- a/hw/core/numa.c +++ b/hw/core/numa.c @@ -23,6 +23,7 @@ */ #include "qemu/osdep.h" +#include "qemu/units.h" #include "sysemu/hostmem.h" #include "sysemu/numa.h" #include "sysemu/sysemu.h" @@ -198,6 +199,128 @@ void parse_numa_distance(MachineState *ms, NumaDistOptions *dist, Error **errp) ms->numa_state->have_numa_distance = true; } +void parse_numa_hmat_lb(NumaState *numa_state, NumaHmatLBOptions *node, + Error **errp) +{ + int first_bit, last_bit; + uint64_t max_latency, temp_base_la; + NodeInfo *numa_info = numa_state->nodes; + HMAT_LB_Info *hmat_lb = + numa_state->hmat_lb[node->hierarchy][node->data_type]; + HMAT_LB_Data lb_data; + + /* Error checking */ + if (node->initiator >= numa_state->num_nodes) { + error_setg(errp, "Invalid initiator=%d, it should be less than %d.", + node->initiator, numa_state->num_nodes); + return; + } + if (node->target >= numa_state->num_nodes) { + error_setg(errp, "Invalid target=%d, it should be less than %d.", + node->target, numa_state->num_nodes); + return; + } + if (!numa_info[node->initiator].has_cpu) { + error_setg(errp, "Invalid initiator=%d, it isn't an " + "initiator proximity domain.", node->initiator); + return; + } + if (!numa_info[node->target].present) { + error_setg(errp, "Invalid target=%d, it hasn't a valid NUMA node.", + node->target); + return; + } + + if (!hmat_lb) { + hmat_lb = g_malloc0(sizeof(*hmat_lb)); + numa_state->hmat_lb[node->hierarchy][node->data_type] = hmat_lb; + hmat_lb->latency = g_array_new(false, true, sizeof(HMAT_LB_Data)); + hmat_lb->bandwidth = g_array_new(false, true, sizeof(HMAT_LB_Data)); + } + hmat_lb->hierarchy = node->hierarchy; + hmat_lb->data_type = node->data_type; + lb_data.initiator = node->initiator; + lb_data.target = node->target; + + /* Input latency data */ + if (node->data_type <= HMATLB_DATA_TYPE_WRITE_LATENCY) { + if (!node->has_latency) { + error_setg(errp, "Missing 'latency' option."); + return; + } + if (node->has_bandwidth) { + error_setg(errp, "Invalid option 'bandwidth' since " + "the data type is latency."); + return; + } + + if (hmat_lb->base_latency == 0) { + hmat_lb->base_latency = UINT64_MAX; + } + + /* Calculate the temporary base and compressed latency */ + max_latency = node->latency; + temp_base_la = 1; + while (QEMU_IS_ALIGNED(max_latency, 10)) { + max_latency /= 10; + temp_base_la *= 10; + } + + /* Calculate the max compressed latency */ + hmat_lb->base_latency = MIN(hmat_lb->base_latency, temp_base_la); + max_latency = node->latency / hmat_lb->base_latency; + hmat_lb->max_entry_la = MAX(hmat_lb->max_entry_la, max_latency); + + if (hmat_lb->max_entry_la >= UINT16_MAX) { + error_setg(errp, "Latency %" PRIu64 " between initiator=%d and " + "target=%d should not differ from previously entered " + "values on more than %d.", node->latency, + node->initiator, node->target, UINT16_MAX - 1); + return; + } + + lb_data.rawdata = node->latency; + g_array_append_val(hmat_lb->latency, lb_data); + } + + /* Input bandwidth data */ + if (node->data_type >= HMATLB_DATA_TYPE_ACCESS_BANDWIDTH) { + if (!node->has_bandwidth) { + error_setg(errp, "Missing 'bandwidth' option."); + return; + } + if (node->has_latency) { + error_setg(errp, "Invalid option 'latency' since " + "the data type is bandwidth."); + return; + } + if (!QEMU_IS_ALIGNED(node->bandwidth, MiB)) { + error_setg(errp, "Bandwidth %" PRIu64 " between initiator=%d and " + "target=%d should be 1MB aligned.", node->bandwidth, + node->initiator, node->target); + return; + } + + hmat_lb->range_bitmap_bw |= node->bandwidth; + + first_bit = ctz64(hmat_lb->range_bitmap_bw); + hmat_lb->base_bandwidth = UINT64_C(1) << first_bit; + last_bit = 64 - clz64(hmat_lb->range_bitmap_bw); + if ((last_bit - first_bit) > UINT16_BITS || + (MAKE_64BIT_MASK(first_bit, UINT16_BITS) == node->bandwidth)) { + error_setg(errp, "Bandwidth %" PRIu64 " between initiator=%d and " + "target=%d should not differ from previously entered " + "values on more than %d.", node->bandwidth, + node->initiator, node->target, UINT16_MAX - 1); + return; + } + + hmat_lb->base_bandwidth = UINT64_C(1) << first_bit; + lb_data.rawdata = node->bandwidth; + g_array_append_val(hmat_lb->bandwidth, lb_data); + } +} + void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp) { Error *err = NULL; @@ -236,6 +359,19 @@ void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp) machine_set_cpu_numa_node(ms, qapi_NumaCpuOptions_base(&object->u.cpu), &err); break; + case NUMA_OPTIONS_TYPE_HMAT_LB: + if (!ms->numa_state->hmat_enabled) { + error_setg(errp, "ACPI Heterogeneous Memory Attribute Table " + "(HMAT) is disabled, enable it with -machine hmat=on " + "before using any of hmat specific options."); + return; + } + + parse_numa_hmat_lb(ms->numa_state, &object->u.hmat_lb, &err); + if (err) { + goto end; + } + break; default: abort(); } diff --git a/include/sysemu/numa.h b/include/sysemu/numa.h index 788cbec7a2..36e1b4dece 100644 --- a/include/sysemu/numa.h +++ b/include/sysemu/numa.h @@ -14,6 +14,29 @@ struct CPUArchId; #define NUMA_DISTANCE_MAX 254 #define NUMA_DISTANCE_UNREACHABLE 255 +/* the value of AcpiHmatLBInfo flags */ +enum { + HMAT_LB_MEM_MEMORY = 0, + HMAT_LB_MEM_CACHE_1ST_LEVEL = 1, + HMAT_LB_MEM_CACHE_2ND_LEVEL = 2, + HMAT_LB_MEM_CACHE_3RD_LEVEL = 3, +}; + +/* the value of AcpiHmatLBInfo data type */ +enum { + HMAT_LB_DATA_ACCESS_LATENCY = 0, + HMAT_LB_DATA_READ_LATENCY = 1, + HMAT_LB_DATA_WRITE_LATENCY = 2, + HMAT_LB_DATA_ACCESS_BANDWIDTH = 3, + HMAT_LB_DATA_READ_BANDWIDTH = 4, + HMAT_LB_DATA_WRITE_BANDWIDTH = 5, +}; + +#define UINT16_BITS 16 + +#define HMAT_LB_LEVELS (HMAT_LB_MEM_CACHE_3RD_LEVEL + 1) +#define HMAT_LB_TYPES (HMAT_LB_DATA_WRITE_BANDWIDTH + 1) + struct NodeInfo { uint64_t node_mem; struct HostMemoryBackend *node_memdev; @@ -28,6 +51,46 @@ struct NumaNodeMem { uint64_t node_plugged_mem; }; +struct HMAT_LB_Data { + uint8_t initiator; + uint8_t target; + uint64_t rawdata; +}; +typedef struct HMAT_LB_Data HMAT_LB_Data; + +struct HMAT_LB_Info { + /* Indicates it's memory or the specified level memory side cache. */ + uint8_t hierarchy; + + /* Present the type of data, access/read/write latency or bandwidth. */ + uint8_t data_type; + + /* The max compressed latency for calculating common latency base */ + uint64_t max_entry_la; + + /* The range bitmap of bandwidth for calculating common bandwidth base */ + uint64_t range_bitmap_bw; + + /* The common base unit for latencies */ + uint64_t base_latency; + + /* The common base unit for bandwidths */ + uint64_t base_bandwidth; + + /* Array to store the compressed latencies */ + uint16_t *entry_latency; + + /* Array to store the compressed latencies */ + uint16_t *entry_bandwidth; + + /* Array to store the latencies */ + GArray *latency; + + /* Array to store the bandwidthes */ + GArray *bandwidth; +}; +typedef struct HMAT_LB_Info HMAT_LB_Info; + struct NumaState { /* Number of NUMA nodes */ int num_nodes; @@ -40,11 +103,16 @@ struct NumaState { /* NUMA nodes information */ NodeInfo nodes[MAX_NODES]; + + /* NUMA nodes HMAT Locality Latency and Bandwidth Information */ + HMAT_LB_Info *hmat_lb[HMAT_LB_LEVELS][HMAT_LB_TYPES]; }; typedef struct NumaState NumaState; void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp); void parse_numa_opts(MachineState *ms); +void parse_numa_hmat_lb(NumaState *numa_state, NumaHmatLBOptions *node, + Error **errp); void numa_complete_configuration(MachineState *ms); void query_numa_node_mem(NumaNodeMem node_mem[], MachineState *ms); extern QemuOptsList qemu_numa_opts; diff --git a/qapi/machine.json b/qapi/machine.json index 27d0e37534..da4d2c2cfc 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -426,10 +426,12 @@ # # @cpu: property based CPU(s) to node mapping (Since: 2.10) # +# @hmat-lb: memory latency and bandwidth information (Since: 5.0) +# # Since: 2.1 ## { 'enum': 'NumaOptionsType', - 'data': [ 'node', 'dist', 'cpu' ] } + 'data': [ 'node', 'dist', 'cpu', 'hmat-lb' ] } ## # @NumaOptions: @@ -444,7 +446,8 @@ 'data': { 'node': 'NumaNodeOptions', 'dist': 'NumaDistOptions', - 'cpu': 'NumaCpuOptions' }} + 'cpu': 'NumaCpuOptions', + 'hmat-lb': 'NumaHmatLBOptions' }} ## # @NumaNodeOptions: @@ -557,6 +560,93 @@ 'base': 'CpuInstanceProperties', 'data' : {} } +## +# @HmatLBMemoryHierarchy: +# +# The memory hierarchy in the System Locality Latency +# and Bandwidth Information Structure of HMAT (Heterogeneous +# Memory Attribute Table) +# +# For more information of @HmatLBMemoryHierarchy see +# the chapter 5.2.27.4: Table 5-142: Field "Flags" of ACPI 6.3 spec. +# +# @memory: the structure represents the memory performance +# +# @first-level: first level memory of memory side cached memory +# +# @second-level: second level memory of memory side cached memory +# +# @third-level: third level memory of memory side cached memory +# +# Since: 5.0 +## +{ 'enum': 'HmatLBMemoryHierarchy', + 'data': [ 'memory', 'first-level', 'second-level', 'third-level' ] } + +## +# @HmatLBDataType: +# +# Data type in the System Locality Latency +# and Bandwidth Information Structure of HMAT (Heterogeneous +# Memory Attribute Table) +# +# For more information of @HmatLBDataType see +# the chapter 5.2.27.4: Table 5-142: Field "Data Type" of ACPI 6.3 spec. +# +# @access-latency: access latency (nanoseconds) +# +# @read-latency: read latency (nanoseconds) +# +# @write-latency: write latency (nanoseconds) +# +# @access-bandwidth: access bandwidth (B/s) +# +# @read-bandwidth: read bandwidth (B/s) +# +# @write-bandwidth: write bandwidth (B/s) +# +# Since: 5.0 +## +{ 'enum': 'HmatLBDataType', + 'data': [ 'access-latency', 'read-latency', 'write-latency', + 'access-bandwidth', 'read-bandwidth', 'write-bandwidth' ] } + +## +# @NumaHmatLBOptions: +# +# Set the system locality latency and bandwidth information +# between Initiator and Target proximity Domains. +# +# For more information of @NumaHmatLBOptions see +# the chapter 5.2.27.4: Table 5-142 of ACPI 6.3 spec. +# +# @initiator: the Initiator Proximity Domain. +# +# @target: the Target Proximity Domain. +# +# @hierarchy: the Memory Hierarchy. Indicates the performance +# of memory or side cache. +# +# @data-type: presents the type of data, access/read/write +# latency or hit latency. +# +# @latency: the value of latency from @initiator to @target proximity domain, +# the latency unit is "ns(nanosecond)". +# +# @bandwidth: the value of bandwidth between @initiator and @target proximity +# domain, the bandwidth unit is "B(/s)". +# +# Since: 5.0 +## +{ 'struct': 'NumaHmatLBOptions', + 'data': { + 'initiator': 'uint16', + 'target': 'uint16', + 'hierarchy': 'HmatLBMemoryHierarchy', + 'data-type': 'HmatLBDataType', + '*latency': 'time', + '*bandwidth': 'size' }} + ## # @HostMemPolicy: # diff --git a/qemu-options.hx b/qemu-options.hx index cb0417b736..ec4ec37010 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -168,16 +168,19 @@ DEF("numa", HAS_ARG, QEMU_OPTION_numa, "-numa node[,mem=size][,cpus=firstcpu[-lastcpu]][,nodeid=node][,initiator=node]\n" "-numa node[,memdev=id][,cpus=firstcpu[-lastcpu]][,nodeid=node][,initiator=node]\n" "-numa dist,src=source,dst=destination,val=distance\n" - "-numa cpu,node-id=node[,socket-id=x][,core-id=y][,thread-id=z]\n", + "-numa cpu,node-id=node[,socket-id=x][,core-id=y][,thread-id=z]\n" + "-numa hmat-lb,initiator=node,target=node,hierarchy=memory|first-level|second-level|third-level,data-type=access-latency|read-latency|write-latency[,latency=lat][,bandwidth=bw]\n", QEMU_ARCH_ALL) STEXI @item -numa node[,mem=@var{size}][,cpus=@var{firstcpu}[-@var{lastcpu}]][,nodeid=@var{node}][,initiator=@var{initiator}] @itemx -numa node[,memdev=@var{id}][,cpus=@var{firstcpu}[-@var{lastcpu}]][,nodeid=@var{node}][,initiator=@var{initiator}] @itemx -numa dist,src=@var{source},dst=@var{destination},val=@var{distance} @itemx -numa cpu,node-id=@var{node}[,socket-id=@var{x}][,core-id=@var{y}][,thread-id=@var{z}] +@itemx -numa hmat-lb,initiator=@var{node},target=@var{node},hierarchy=@var{hierarchy},data-type=@var{tpye}[,latency=@var{lat}][,bandwidth=@var{bw}] @findex -numa Define a NUMA node and assign RAM and VCPUs to it. Set the NUMA distance from a source node to a destination node. +Set the ACPI Heterogeneous Memory Attributes for the given nodes. Legacy VCPU assignment uses @samp{cpus} option where @var{firstcpu} and @var{lastcpu} are CPU indexes. Each @@ -256,6 +259,50 @@ specified resources, it just assigns existing resources to NUMA nodes. This means that one still has to use the @option{-m}, @option{-smp} options to allocate RAM and VCPUs respectively. +Use @samp{hmat-lb} to set System Locality Latency and Bandwidth Information +between initiator and target NUMA nodes in ACPI Heterogeneous Attribute Memory Table (HMAT). +Initiator NUMA node can create memory requests, usually it has one or more processors. +Target NUMA node contains addressable memory. + +In @samp{hmat-lb} option, @var{node} are NUMA node IDs. @var{hierarchy} is the memory +hierarchy of the target NUMA node: if @var{hierarchy} is 'memory', the structure +represents the memory performance; if @var{hierarchy} is 'first-level|second-level|third-level', +this structure represents aggregated performance of memory side caches for each domain. +@var{type} of 'data-type' is type of data represented by this structure instance: +if 'hierarchy' is 'memory', 'data-type' is 'access|read|write' latency or 'access|read|write' +bandwidth of the target memory; if 'hierarchy' is 'first-level|second-level|third-level', +'data-type' is 'access|read|write' hit latency or 'access|read|write' hit bandwidth of the +target memory side cache. + +@var{lat} of 'latency' is latency value, the possible value and units are +NUM[ns|us|ms] (nanosecond|microsecond|millisecond), the recommended unit is 'ns'. +@var{bw} is bandwidth value, the possible value and units are NUM[M|G|T], mean that +the bandwidth value are NUM MB/s, GB/s or TB/s. Note that for @var{lat} and @var{bw} +max NUM is 65534, if NUM is 0, means the corresponding latency or bandwidth information +is not provided. And if input numbers without any unit, the latency unit will be 'ns' +and the bandwidth will be MB/s. + +For example, the following option assigns NUMA node 0 and 1. Node 0 has 2 cpus and +a ram, node 1 has only a ram. The processors in node 0 access memory in node +0 with access-latency 5 nanoseconds, access-bandwidth is 200 MB/s; +The processors in NUMA node 0 access memory in NUMA node 1 with access-latency 10 +nanoseconds, access-bandwidth is 100 MB/s. +@example +-machine hmat=on \ +-m 2G \ +-object memory-backend-ram,size=1G,id=m0 \ +-object memory-backend-ram,size=1G,id=m1 \ +-smp 2 \ +-numa node,nodeid=0,memdev=m0 \ +-numa node,nodeid=1,memdev=m1,initiator=0 \ +-numa cpu,node-id=0,socket-id=0 \ +-numa cpu,node-id=0,socket-id=1 \ +-numa hmat-lb,initiator=0,target=0,hierarchy=memory,data-type=access-latency,latency=5ns \ +-numa hmat-lb,initiator=0,target=0,hierarchy=memory,data-type=access-bandwidth,bandwidth=200M \ +-numa hmat-lb,initiator=0,target=1,hierarchy=memory,data-type=access-latency,latency=10ns \ +-numa hmat-lb,initiator=0,target=1,hierarchy=memory,data-type=access-bandwidth,bandwidth=100M +@end example + ETEXI DEF("add-fd", HAS_ARG, QEMU_OPTION_add_fd, -- 2.20.1