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qemu
numa-Extend-CLI-to-provide-memory-side-c.patch
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File numa-Extend-CLI-to-provide-memory-side-c.patch of Package qemu
From: Liu Jingqi <jingqi.liu@intel.com> Date: Fri, 13 Dec 2019 09:19:24 +0800 Subject: numa: Extend CLI to provide memory side cache information Git-commit: c412a48d4d91e8f8b89aae02de0f44f1f0b729e5 References: jsc#SLE-8897 Add -numa hmat-cache option to provide Memory Side Cache Information. These memory attributes help to build Memory Side Cache Information Structure(s) in ACPI Heterogeneous Memory Attribute Table (HMAT). Before using hmat-cache option, enable HMAT with -machine hmat=on. Acked-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Liu Jingqi <jingqi.liu@intel.com> Signed-off-by: Tao Xu <tao3.xu@intel.com> Message-Id: <20191213011929.2520-4-tao3.xu@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Bruce Rogers brogers@suse.com> --- hw/core/numa.c | 80 ++++++++++++++++++++++++++++++++++++++++++ include/sysemu/numa.h | 5 +++ qapi/machine.json | 81 +++++++++++++++++++++++++++++++++++++++++-- qemu-options.hx | 17 +++++++-- 4 files changed, 179 insertions(+), 4 deletions(-) diff --git a/hw/core/numa.c b/hw/core/numa.c index 58fe7138b290f8b8cbc340d3d1ec..0d1b4be76a69fe7baba48f928f2f 100644 --- a/hw/core/numa.c +++ b/hw/core/numa.c @@ -375,6 +375,73 @@ void parse_numa_hmat_lb(NumaState *numa_state, NumaHmatLBOptions *node, g_array_append_val(hmat_lb->list, lb_data); } +void parse_numa_hmat_cache(MachineState *ms, NumaHmatCacheOptions *node, + Error **errp) +{ + int nb_numa_nodes = ms->numa_state->num_nodes; + NodeInfo *numa_info = ms->numa_state->nodes; + NumaHmatCacheOptions *hmat_cache = NULL; + + if (node->node_id >= nb_numa_nodes) { + error_setg(errp, "Invalid node-id=%" PRIu32 ", it should be less " + "than %d", node->node_id, nb_numa_nodes); + return; + } + + if (numa_info[node->node_id].lb_info_provided != (BIT(0) | BIT(1))) { + error_setg(errp, "The latency and bandwidth information of " + "node-id=%" PRIu32 " should be provided before memory side " + "cache attributes", node->node_id); + return; + } + + if (node->level < 1 || node->level >= HMAT_LB_LEVELS) { + error_setg(errp, "Invalid level=%" PRIu8 ", it should be larger than 0 " + "and less than or equal to %d", node->level, + HMAT_LB_LEVELS - 1); + return; + } + + assert(node->associativity < HMAT_CACHE_ASSOCIATIVITY__MAX); + assert(node->policy < HMAT_CACHE_WRITE_POLICY__MAX); + if (ms->numa_state->hmat_cache[node->node_id][node->level]) { + error_setg(errp, "Duplicate configuration of the side cache for " + "node-id=%" PRIu32 " and level=%" PRIu8, + node->node_id, node->level); + return; + } + + if ((node->level > 1) && + ms->numa_state->hmat_cache[node->node_id][node->level - 1] && + (node->size >= + ms->numa_state->hmat_cache[node->node_id][node->level - 1]->size)) { + error_setg(errp, "Invalid size=%" PRIu64 ", the size of level=%" PRIu8 + " should be less than the size(%" PRIu64 ") of " + "level=%u", node->size, node->level, + ms->numa_state->hmat_cache[node->node_id] + [node->level - 1]->size, + node->level - 1); + return; + } + + if ((node->level < HMAT_LB_LEVELS - 1) && + ms->numa_state->hmat_cache[node->node_id][node->level + 1] && + (node->size <= + ms->numa_state->hmat_cache[node->node_id][node->level + 1]->size)) { + error_setg(errp, "Invalid size=%" PRIu64 ", the size of level=%" PRIu8 + " should be larger than the size(%" PRIu64 ") of " + "level=%u", node->size, node->level, + ms->numa_state->hmat_cache[node->node_id] + [node->level + 1]->size, + node->level + 1); + return; + } + + hmat_cache = g_malloc0(sizeof(*hmat_cache)); + memcpy(hmat_cache, node, sizeof(*hmat_cache)); + ms->numa_state->hmat_cache[node->node_id][node->level] = hmat_cache; +} + void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp) { Error *err = NULL; @@ -425,6 +492,19 @@ void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp) goto end; } break; + case NUMA_OPTIONS_TYPE_HMAT_CACHE: + 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_cache(ms, &object->u.hmat_cache, &err); + if (err) { + goto end; + } + break; default: abort(); } diff --git a/include/sysemu/numa.h b/include/sysemu/numa.h index 70f93c83d71eb2cdab5bf1dde422..ba693cc80b780ecccd49a4fa9145 100644 --- a/include/sysemu/numa.h +++ b/include/sysemu/numa.h @@ -91,6 +91,9 @@ struct NumaState { /* NUMA nodes HMAT Locality Latency and Bandwidth Information */ HMAT_LB_Info *hmat_lb[HMAT_LB_LEVELS][HMAT_LB_TYPES]; + + /* Memory Side Cache Information Structure */ + NumaHmatCacheOptions *hmat_cache[MAX_NODES][HMAT_LB_LEVELS]; }; typedef struct NumaState NumaState; @@ -98,6 +101,8 @@ 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 parse_numa_hmat_cache(MachineState *ms, NumaHmatCacheOptions *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 cf8faf5a2a4929560c852bf8d50c..b3d30bc8162da9a0b60005fdd86b 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -428,10 +428,12 @@ # # @hmat-lb: memory latency and bandwidth information (Since: 5.0) # +# @hmat-cache: memory side cache information (Since: 5.0) +# # Since: 2.1 ## { 'enum': 'NumaOptionsType', - 'data': [ 'node', 'dist', 'cpu', 'hmat-lb' ] } + 'data': [ 'node', 'dist', 'cpu', 'hmat-lb', 'hmat-cache' ] } ## # @NumaOptions: @@ -447,7 +449,8 @@ 'node': 'NumaNodeOptions', 'dist': 'NumaDistOptions', 'cpu': 'NumaCpuOptions', - 'hmat-lb': 'NumaHmatLBOptions' }} + 'hmat-lb': 'NumaHmatLBOptions', + 'hmat-cache': 'NumaHmatCacheOptions' }} ## # @NumaNodeOptions: @@ -646,6 +649,80 @@ '*latency': 'uint64', '*bandwidth': 'size' }} +## +# @HmatCacheAssociativity: +# +# Cache associativity in the Memory Side Cache Information Structure +# of HMAT +# +# For more information of @HmatCacheAssociativity, see chapter +# 5.2.27.5: Table 5-147 of ACPI 6.3 spec. +# +# @none: None (no memory side cache in this proximity domain, +# or cache associativity unknown) +# +# @direct: Direct Mapped +# +# @complex: Complex Cache Indexing (implementation specific) +# +# Since: 5.0 +## +{ 'enum': 'HmatCacheAssociativity', + 'data': [ 'none', 'direct', 'complex' ] } + +## +# @HmatCacheWritePolicy: +# +# Cache write policy in the Memory Side Cache Information Structure +# of HMAT +# +# For more information of @HmatCacheWritePolicy, see chapter +# 5.2.27.5: Table 5-147: Field "Cache Attributes" of ACPI 6.3 spec. +# +# @none: None (no memory side cache in this proximity domain, +# or cache write policy unknown) +# +# @write-back: Write Back (WB) +# +# @write-through: Write Through (WT) +# +# Since: 5.0 +## +{ 'enum': 'HmatCacheWritePolicy', + 'data': [ 'none', 'write-back', 'write-through' ] } + +## +# @NumaHmatCacheOptions: +# +# Set the memory side cache information for a given memory domain. +# +# For more information of @NumaHmatCacheOptions, see chapter +# 5.2.27.5: Table 5-147: Field "Cache Attributes" of ACPI 6.3 spec. +# +# @node-id: the memory proximity domain to which the memory belongs. +# +# @size: the size of memory side cache in bytes. +# +# @level: the cache level described in this structure. +# +# @associativity: the cache associativity, +# none/direct-mapped/complex(complex cache indexing). +# +# @policy: the write policy, none/write-back/write-through. +# +# @line: the cache Line size in bytes. +# +# Since: 5.0 +## +{ 'struct': 'NumaHmatCacheOptions', + 'data': { + 'node-id': 'uint32', + 'size': 'size', + 'level': 'uint8', + 'associativity': 'HmatCacheAssociativity', + 'policy': 'HmatCacheWritePolicy', + 'line': 'uint16' }} + ## # @HostMemPolicy: # diff --git a/qemu-options.hx b/qemu-options.hx index 5f7f31457ab6a8640698f6913b07..b0471ed152d77c9e0512c842149f 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -169,7 +169,8 @@ DEF("numa", HAS_ARG, QEMU_OPTION_numa, "-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 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", + "-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" + "-numa hmat-cache,node-id=node,size=size,level=level[,associativity=none|direct|complex][,policy=none|write-back|write-through][,line=size]\n", QEMU_ARCH_ALL) STEXI @item -numa node[,mem=@var{size}][,cpus=@var{firstcpu}[-@var{lastcpu}]][,nodeid=@var{node}][,initiator=@var{initiator}] @@ -177,6 +178,7 @@ STEXI @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}] +@itemx -numa hmat-cache,node-id=@var{node},size=@var{size},level=@var{level}[,associativity=@var{str}][,policy=@var{str}][,line=@var{size}] @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. @@ -280,11 +282,20 @@ NUM byte per second (or MB/s, GB/s or TB/s depending on used suffix). Note that if latency or bandwidth value is 0, means the corresponding latency or bandwidth information is not provided. +In @samp{hmat-cache} option, @var{node-id} is the NUMA-id of the memory belongs. +@var{size} is the size of memory side cache in bytes. @var{level} is the cache +level described in this structure, note that the cache level 0 should not be used +with @samp{hmat-cache} option. @var{associativity} is the cache associativity, +the possible value is 'none/direct(direct-mapped)/complex(complex cache indexing)'. +@var{policy} is the write policy. @var{line} is the cache Line size in bytes. + For example, the following options describe 2 NUMA nodes. 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. +And for memory side cache information, NUMA node 0 and 1 both have 1 level memory +cache, size is 10KB, policy is write-back, the cache Line size is 8 bytes: @example -machine hmat=on \ -m 2G \ @@ -298,7 +309,9 @@ nanoseconds, access-bandwidth is 100 MB/s. -numa hmat-lb,initiator=0,target=0,hierarchy=memory,data-type=access-latency,latency=5 \ -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=10 \ --numa hmat-lb,initiator=0,target=1,hierarchy=memory,data-type=access-bandwidth,bandwidth=100M +-numa hmat-lb,initiator=0,target=1,hierarchy=memory,data-type=access-bandwidth,bandwidth=100M \ +-numa hmat-cache,node-id=0,size=10K,level=1,associativity=direct,policy=write-back,line=8 \ +-numa hmat-cache,node-id=1,size=10K,level=1,associativity=direct,policy=write-back,line=8 @end example ETEXI
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