Convert visit_type_FOO(v, ..., &ptr, &err); ... if (err) { ... } to visit_type_FOO(v, ..., &ptr, errp); ... if (!ptr) { ... } for functions that set @ptr to non-null / null on success / error. Eliminate error_propagate() that are now unnecessary. Delete @err that are now unused. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-40-armbru@redhat.com>
886 lines
31 KiB
C
886 lines
31 KiB
C
/*
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* NUMA parameter parsing routines
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*
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* Copyright (c) 2014 Fujitsu Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu/units.h"
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#include "sysemu/hostmem.h"
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#include "sysemu/numa.h"
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#include "sysemu/sysemu.h"
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#include "exec/cpu-common.h"
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#include "exec/ramlist.h"
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#include "qemu/bitmap.h"
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#include "qemu/error-report.h"
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#include "qapi/error.h"
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#include "qapi/opts-visitor.h"
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#include "qapi/qapi-visit-machine.h"
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#include "sysemu/qtest.h"
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#include "hw/core/cpu.h"
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#include "hw/mem/pc-dimm.h"
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#include "migration/vmstate.h"
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#include "hw/boards.h"
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#include "hw/mem/memory-device.h"
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#include "qemu/option.h"
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#include "qemu/config-file.h"
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#include "qemu/cutils.h"
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QemuOptsList qemu_numa_opts = {
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.name = "numa",
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.implied_opt_name = "type",
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.head = QTAILQ_HEAD_INITIALIZER(qemu_numa_opts.head),
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.desc = { { 0 } } /* validated with OptsVisitor */
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};
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static int have_memdevs;
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bool numa_uses_legacy_mem(void)
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{
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return !have_memdevs;
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}
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static int have_mem;
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static int max_numa_nodeid; /* Highest specified NUMA node ID, plus one.
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* For all nodes, nodeid < max_numa_nodeid
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*/
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static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
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Error **errp)
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{
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Error *err = NULL;
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uint16_t nodenr;
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uint16List *cpus = NULL;
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MachineClass *mc = MACHINE_GET_CLASS(ms);
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unsigned int max_cpus = ms->smp.max_cpus;
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NodeInfo *numa_info = ms->numa_state->nodes;
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if (node->has_nodeid) {
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nodenr = node->nodeid;
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} else {
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nodenr = ms->numa_state->num_nodes;
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}
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if (nodenr >= MAX_NODES) {
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error_setg(errp, "Max number of NUMA nodes reached: %"
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PRIu16 "", nodenr);
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return;
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}
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if (numa_info[nodenr].present) {
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error_setg(errp, "Duplicate NUMA nodeid: %" PRIu16, nodenr);
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return;
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}
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for (cpus = node->cpus; cpus; cpus = cpus->next) {
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CpuInstanceProperties props;
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if (cpus->value >= max_cpus) {
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error_setg(errp,
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"CPU index (%" PRIu16 ")"
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" should be smaller than maxcpus (%d)",
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cpus->value, max_cpus);
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return;
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}
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props = mc->cpu_index_to_instance_props(ms, cpus->value);
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props.node_id = nodenr;
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props.has_node_id = true;
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machine_set_cpu_numa_node(ms, &props, &err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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}
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have_memdevs = have_memdevs ? : node->has_memdev;
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have_mem = have_mem ? : node->has_mem;
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if ((node->has_mem && have_memdevs) || (node->has_memdev && have_mem)) {
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error_setg(errp, "numa configuration should use either mem= or memdev=,"
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"mixing both is not allowed");
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return;
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}
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if (node->has_mem) {
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if (!mc->numa_mem_supported) {
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error_setg(errp, "Parameter -numa node,mem is not supported by this"
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" machine type");
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error_append_hint(errp, "Use -numa node,memdev instead\n");
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return;
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}
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numa_info[nodenr].node_mem = node->mem;
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if (!qtest_enabled()) {
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warn_report("Parameter -numa node,mem is deprecated,"
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" use -numa node,memdev instead");
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}
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}
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if (node->has_memdev) {
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Object *o;
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o = object_resolve_path_type(node->memdev, TYPE_MEMORY_BACKEND, NULL);
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if (!o) {
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error_setg(errp, "memdev=%s is ambiguous", node->memdev);
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return;
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}
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object_ref(o);
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numa_info[nodenr].node_mem = object_property_get_uint(o, "size", NULL);
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numa_info[nodenr].node_memdev = MEMORY_BACKEND(o);
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}
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/*
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* If not set the initiator, set it to MAX_NODES. And if
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* HMAT is enabled and this node has no cpus, QEMU will raise error.
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*/
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numa_info[nodenr].initiator = MAX_NODES;
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if (node->has_initiator) {
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if (!ms->numa_state->hmat_enabled) {
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error_setg(errp, "ACPI Heterogeneous Memory Attribute Table "
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"(HMAT) is disabled, enable it with -machine hmat=on "
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"before using any of hmat specific options");
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return;
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}
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if (node->initiator >= MAX_NODES) {
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error_report("The initiator id %" PRIu16 " expects an integer "
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"between 0 and %d", node->initiator,
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MAX_NODES - 1);
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return;
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}
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numa_info[nodenr].initiator = node->initiator;
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}
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numa_info[nodenr].present = true;
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max_numa_nodeid = MAX(max_numa_nodeid, nodenr + 1);
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ms->numa_state->num_nodes++;
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}
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static
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void parse_numa_distance(MachineState *ms, NumaDistOptions *dist, Error **errp)
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{
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uint16_t src = dist->src;
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uint16_t dst = dist->dst;
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uint8_t val = dist->val;
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NodeInfo *numa_info = ms->numa_state->nodes;
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if (src >= MAX_NODES || dst >= MAX_NODES) {
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error_setg(errp, "Parameter '%s' expects an integer between 0 and %d",
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src >= MAX_NODES ? "src" : "dst", MAX_NODES - 1);
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return;
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}
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if (!numa_info[src].present || !numa_info[dst].present) {
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error_setg(errp, "Source/Destination NUMA node is missing. "
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"Please use '-numa node' option to declare it first.");
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return;
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}
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if (val < NUMA_DISTANCE_MIN) {
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error_setg(errp, "NUMA distance (%" PRIu8 ") is invalid, "
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"it shouldn't be less than %d.",
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val, NUMA_DISTANCE_MIN);
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return;
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}
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if (src == dst && val != NUMA_DISTANCE_MIN) {
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error_setg(errp, "Local distance of node %d should be %d.",
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src, NUMA_DISTANCE_MIN);
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return;
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}
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numa_info[src].distance[dst] = val;
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ms->numa_state->have_numa_distance = true;
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}
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void parse_numa_hmat_lb(NumaState *numa_state, NumaHmatLBOptions *node,
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Error **errp)
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{
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int i, first_bit, last_bit;
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uint64_t max_entry, temp_base, bitmap_copy;
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NodeInfo *numa_info = numa_state->nodes;
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HMAT_LB_Info *hmat_lb =
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numa_state->hmat_lb[node->hierarchy][node->data_type];
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HMAT_LB_Data lb_data = {};
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HMAT_LB_Data *lb_temp;
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/* Error checking */
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if (node->initiator > numa_state->num_nodes) {
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error_setg(errp, "Invalid initiator=%d, it should be less than %d",
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node->initiator, numa_state->num_nodes);
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return;
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}
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if (node->target > numa_state->num_nodes) {
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error_setg(errp, "Invalid target=%d, it should be less than %d",
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node->target, numa_state->num_nodes);
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return;
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}
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if (!numa_info[node->initiator].has_cpu) {
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error_setg(errp, "Invalid initiator=%d, it isn't an "
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"initiator proximity domain", node->initiator);
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return;
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}
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if (!numa_info[node->target].present) {
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error_setg(errp, "The target=%d should point to an existing node",
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node->target);
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return;
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}
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if (!hmat_lb) {
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hmat_lb = g_malloc0(sizeof(*hmat_lb));
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numa_state->hmat_lb[node->hierarchy][node->data_type] = hmat_lb;
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hmat_lb->list = g_array_new(false, true, sizeof(HMAT_LB_Data));
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}
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hmat_lb->hierarchy = node->hierarchy;
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hmat_lb->data_type = node->data_type;
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lb_data.initiator = node->initiator;
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lb_data.target = node->target;
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if (node->data_type <= HMATLB_DATA_TYPE_WRITE_LATENCY) {
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/* Input latency data */
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if (!node->has_latency) {
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error_setg(errp, "Missing 'latency' option");
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return;
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}
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if (node->has_bandwidth) {
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error_setg(errp, "Invalid option 'bandwidth' since "
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"the data type is latency");
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return;
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}
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/* Detect duplicate configuration */
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for (i = 0; i < hmat_lb->list->len; i++) {
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lb_temp = &g_array_index(hmat_lb->list, HMAT_LB_Data, i);
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if (node->initiator == lb_temp->initiator &&
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node->target == lb_temp->target) {
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error_setg(errp, "Duplicate configuration of the latency for "
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"initiator=%d and target=%d", node->initiator,
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node->target);
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return;
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}
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}
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hmat_lb->base = hmat_lb->base ? hmat_lb->base : UINT64_MAX;
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if (node->latency) {
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/* Calculate the temporary base and compressed latency */
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max_entry = node->latency;
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temp_base = 1;
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while (QEMU_IS_ALIGNED(max_entry, 10)) {
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max_entry /= 10;
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temp_base *= 10;
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}
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/* Calculate the max compressed latency */
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temp_base = MIN(hmat_lb->base, temp_base);
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max_entry = node->latency / hmat_lb->base;
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max_entry = MAX(hmat_lb->range_bitmap, max_entry);
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/*
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* For latency hmat_lb->range_bitmap record the max compressed
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* latency which should be less than 0xFFFF (UINT16_MAX)
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*/
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if (max_entry >= UINT16_MAX) {
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error_setg(errp, "Latency %" PRIu64 " between initiator=%d and "
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"target=%d should not differ from previously entered "
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"min or max values on more than %d", node->latency,
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node->initiator, node->target, UINT16_MAX - 1);
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return;
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} else {
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hmat_lb->base = temp_base;
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hmat_lb->range_bitmap = max_entry;
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}
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/*
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* Set lb_info_provided bit 0 as 1,
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* latency information is provided
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*/
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numa_info[node->target].lb_info_provided |= BIT(0);
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}
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lb_data.data = node->latency;
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} else if (node->data_type >= HMATLB_DATA_TYPE_ACCESS_BANDWIDTH) {
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/* Input bandwidth data */
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if (!node->has_bandwidth) {
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error_setg(errp, "Missing 'bandwidth' option");
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return;
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}
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if (node->has_latency) {
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error_setg(errp, "Invalid option 'latency' since "
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"the data type is bandwidth");
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return;
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}
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if (!QEMU_IS_ALIGNED(node->bandwidth, MiB)) {
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error_setg(errp, "Bandwidth %" PRIu64 " between initiator=%d and "
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"target=%d should be 1MB aligned", node->bandwidth,
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node->initiator, node->target);
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return;
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}
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/* Detect duplicate configuration */
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for (i = 0; i < hmat_lb->list->len; i++) {
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lb_temp = &g_array_index(hmat_lb->list, HMAT_LB_Data, i);
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if (node->initiator == lb_temp->initiator &&
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node->target == lb_temp->target) {
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error_setg(errp, "Duplicate configuration of the bandwidth for "
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"initiator=%d and target=%d", node->initiator,
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node->target);
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return;
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}
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}
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hmat_lb->base = hmat_lb->base ? hmat_lb->base : 1;
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if (node->bandwidth) {
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/* Keep bitmap unchanged when bandwidth out of range */
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bitmap_copy = hmat_lb->range_bitmap;
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bitmap_copy |= node->bandwidth;
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first_bit = ctz64(bitmap_copy);
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temp_base = UINT64_C(1) << first_bit;
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max_entry = node->bandwidth / temp_base;
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last_bit = 64 - clz64(bitmap_copy);
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/*
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* For bandwidth, first_bit record the base unit of bandwidth bits,
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* last_bit record the last bit of the max bandwidth. The max
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* compressed bandwidth should be less than 0xFFFF (UINT16_MAX)
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*/
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if ((last_bit - first_bit) > UINT16_BITS ||
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max_entry >= UINT16_MAX) {
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error_setg(errp, "Bandwidth %" PRIu64 " between initiator=%d "
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"and target=%d should not differ from previously "
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"entered values on more than %d", node->bandwidth,
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node->initiator, node->target, UINT16_MAX - 1);
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return;
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} else {
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hmat_lb->base = temp_base;
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hmat_lb->range_bitmap = bitmap_copy;
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}
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/*
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* Set lb_info_provided bit 1 as 1,
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* bandwidth information is provided
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*/
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numa_info[node->target].lb_info_provided |= BIT(1);
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}
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lb_data.data = node->bandwidth;
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} else {
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assert(0);
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}
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g_array_append_val(hmat_lb->list, lb_data);
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}
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void parse_numa_hmat_cache(MachineState *ms, NumaHmatCacheOptions *node,
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Error **errp)
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{
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int nb_numa_nodes = ms->numa_state->num_nodes;
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NodeInfo *numa_info = ms->numa_state->nodes;
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NumaHmatCacheOptions *hmat_cache = NULL;
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if (node->node_id >= nb_numa_nodes) {
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error_setg(errp, "Invalid node-id=%" PRIu32 ", it should be less "
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"than %d", node->node_id, nb_numa_nodes);
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return;
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}
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if (numa_info[node->node_id].lb_info_provided != (BIT(0) | BIT(1))) {
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error_setg(errp, "The latency and bandwidth information of "
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"node-id=%" PRIu32 " should be provided before memory side "
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"cache attributes", node->node_id);
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return;
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}
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if (node->level < 1 || node->level >= HMAT_LB_LEVELS) {
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error_setg(errp, "Invalid level=%" PRIu8 ", it should be larger than 0 "
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"and less than or equal to %d", node->level,
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HMAT_LB_LEVELS - 1);
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return;
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}
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assert(node->associativity < HMAT_CACHE_ASSOCIATIVITY__MAX);
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assert(node->policy < HMAT_CACHE_WRITE_POLICY__MAX);
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if (ms->numa_state->hmat_cache[node->node_id][node->level]) {
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error_setg(errp, "Duplicate configuration of the side cache for "
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"node-id=%" PRIu32 " and level=%" PRIu8,
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node->node_id, node->level);
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return;
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}
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if ((node->level > 1) &&
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ms->numa_state->hmat_cache[node->node_id][node->level - 1] &&
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(node->size >=
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ms->numa_state->hmat_cache[node->node_id][node->level - 1]->size)) {
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error_setg(errp, "Invalid size=%" PRIu64 ", the size of level=%" PRIu8
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" should be less than the size(%" PRIu64 ") of "
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"level=%u", node->size, node->level,
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ms->numa_state->hmat_cache[node->node_id]
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[node->level - 1]->size,
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node->level - 1);
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return;
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}
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if ((node->level < HMAT_LB_LEVELS - 1) &&
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ms->numa_state->hmat_cache[node->node_id][node->level + 1] &&
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(node->size <=
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ms->numa_state->hmat_cache[node->node_id][node->level + 1]->size)) {
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error_setg(errp, "Invalid size=%" PRIu64 ", the size of level=%" PRIu8
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" should be larger than the size(%" PRIu64 ") of "
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"level=%u", node->size, node->level,
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ms->numa_state->hmat_cache[node->node_id]
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[node->level + 1]->size,
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node->level + 1);
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return;
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}
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hmat_cache = g_malloc0(sizeof(*hmat_cache));
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memcpy(hmat_cache, node, sizeof(*hmat_cache));
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ms->numa_state->hmat_cache[node->node_id][node->level] = hmat_cache;
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}
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|
|
void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp)
|
|
{
|
|
if (!ms->numa_state) {
|
|
error_setg(errp, "NUMA is not supported by this machine-type");
|
|
return;
|
|
}
|
|
|
|
switch (object->type) {
|
|
case NUMA_OPTIONS_TYPE_NODE:
|
|
parse_numa_node(ms, &object->u.node, errp);
|
|
break;
|
|
case NUMA_OPTIONS_TYPE_DIST:
|
|
parse_numa_distance(ms, &object->u.dist, errp);
|
|
break;
|
|
case NUMA_OPTIONS_TYPE_CPU:
|
|
if (!object->u.cpu.has_node_id) {
|
|
error_setg(errp, "Missing mandatory node-id property");
|
|
return;
|
|
}
|
|
if (!ms->numa_state->nodes[object->u.cpu.node_id].present) {
|
|
error_setg(errp, "Invalid node-id=%" PRId64 ", NUMA node must be "
|
|
"defined with -numa node,nodeid=ID before it's used with "
|
|
"-numa cpu,node-id=ID", object->u.cpu.node_id);
|
|
return;
|
|
}
|
|
|
|
machine_set_cpu_numa_node(ms,
|
|
qapi_NumaCpuOptions_base(&object->u.cpu),
|
|
errp);
|
|
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, errp);
|
|
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, errp);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
static int parse_numa(void *opaque, QemuOpts *opts, Error **errp)
|
|
{
|
|
NumaOptions *object = NULL;
|
|
MachineState *ms = MACHINE(opaque);
|
|
Error *err = NULL;
|
|
Visitor *v = opts_visitor_new(opts);
|
|
|
|
visit_type_NumaOptions(v, NULL, &object, errp);
|
|
visit_free(v);
|
|
if (!object) {
|
|
return -1;
|
|
}
|
|
|
|
/* Fix up legacy suffix-less format */
|
|
if ((object->type == NUMA_OPTIONS_TYPE_NODE) && object->u.node.has_mem) {
|
|
const char *mem_str = qemu_opt_get(opts, "mem");
|
|
qemu_strtosz_MiB(mem_str, NULL, &object->u.node.mem);
|
|
}
|
|
|
|
set_numa_options(ms, object, &err);
|
|
|
|
qapi_free_NumaOptions(object);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* If all node pair distances are symmetric, then only distances
|
|
* in one direction are enough. If there is even one asymmetric
|
|
* pair, though, then all distances must be provided. The
|
|
* distance from a node to itself is always NUMA_DISTANCE_MIN,
|
|
* so providing it is never necessary.
|
|
*/
|
|
static void validate_numa_distance(MachineState *ms)
|
|
{
|
|
int src, dst;
|
|
bool is_asymmetrical = false;
|
|
int nb_numa_nodes = ms->numa_state->num_nodes;
|
|
NodeInfo *numa_info = ms->numa_state->nodes;
|
|
|
|
for (src = 0; src < nb_numa_nodes; src++) {
|
|
for (dst = src; dst < nb_numa_nodes; dst++) {
|
|
if (numa_info[src].distance[dst] == 0 &&
|
|
numa_info[dst].distance[src] == 0) {
|
|
if (src != dst) {
|
|
error_report("The distance between node %d and %d is "
|
|
"missing, at least one distance value "
|
|
"between each nodes should be provided.",
|
|
src, dst);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
if (numa_info[src].distance[dst] != 0 &&
|
|
numa_info[dst].distance[src] != 0 &&
|
|
numa_info[src].distance[dst] !=
|
|
numa_info[dst].distance[src]) {
|
|
is_asymmetrical = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (is_asymmetrical) {
|
|
for (src = 0; src < nb_numa_nodes; src++) {
|
|
for (dst = 0; dst < nb_numa_nodes; dst++) {
|
|
if (src != dst && numa_info[src].distance[dst] == 0) {
|
|
error_report("At least one asymmetrical pair of "
|
|
"distances is given, please provide distances "
|
|
"for both directions of all node pairs.");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void complete_init_numa_distance(MachineState *ms)
|
|
{
|
|
int src, dst;
|
|
NodeInfo *numa_info = ms->numa_state->nodes;
|
|
|
|
/* Fixup NUMA distance by symmetric policy because if it is an
|
|
* asymmetric distance table, it should be a complete table and
|
|
* there would not be any missing distance except local node, which
|
|
* is verified by validate_numa_distance above.
|
|
*/
|
|
for (src = 0; src < ms->numa_state->num_nodes; src++) {
|
|
for (dst = 0; dst < ms->numa_state->num_nodes; dst++) {
|
|
if (numa_info[src].distance[dst] == 0) {
|
|
if (src == dst) {
|
|
numa_info[src].distance[dst] = NUMA_DISTANCE_MIN;
|
|
} else {
|
|
numa_info[src].distance[dst] = numa_info[dst].distance[src];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void numa_legacy_auto_assign_ram(MachineClass *mc, NodeInfo *nodes,
|
|
int nb_nodes, ram_addr_t size)
|
|
{
|
|
int i;
|
|
uint64_t usedmem = 0;
|
|
|
|
/* Align each node according to the alignment
|
|
* requirements of the machine class
|
|
*/
|
|
|
|
for (i = 0; i < nb_nodes - 1; i++) {
|
|
nodes[i].node_mem = (size / nb_nodes) &
|
|
~((1 << mc->numa_mem_align_shift) - 1);
|
|
usedmem += nodes[i].node_mem;
|
|
}
|
|
nodes[i].node_mem = size - usedmem;
|
|
}
|
|
|
|
void numa_default_auto_assign_ram(MachineClass *mc, NodeInfo *nodes,
|
|
int nb_nodes, ram_addr_t size)
|
|
{
|
|
int i;
|
|
uint64_t usedmem = 0, node_mem;
|
|
uint64_t granularity = size / nb_nodes;
|
|
uint64_t propagate = 0;
|
|
|
|
for (i = 0; i < nb_nodes - 1; i++) {
|
|
node_mem = (granularity + propagate) &
|
|
~((1 << mc->numa_mem_align_shift) - 1);
|
|
propagate = granularity + propagate - node_mem;
|
|
nodes[i].node_mem = node_mem;
|
|
usedmem += node_mem;
|
|
}
|
|
nodes[i].node_mem = size - usedmem;
|
|
}
|
|
|
|
static void numa_init_memdev_container(MachineState *ms, MemoryRegion *ram)
|
|
{
|
|
int i;
|
|
uint64_t addr = 0;
|
|
|
|
for (i = 0; i < ms->numa_state->num_nodes; i++) {
|
|
uint64_t size = ms->numa_state->nodes[i].node_mem;
|
|
HostMemoryBackend *backend = ms->numa_state->nodes[i].node_memdev;
|
|
if (!backend) {
|
|
continue;
|
|
}
|
|
MemoryRegion *seg = machine_consume_memdev(ms, backend);
|
|
memory_region_add_subregion(ram, addr, seg);
|
|
addr += size;
|
|
}
|
|
}
|
|
|
|
void numa_complete_configuration(MachineState *ms)
|
|
{
|
|
int i;
|
|
MachineClass *mc = MACHINE_GET_CLASS(ms);
|
|
NodeInfo *numa_info = ms->numa_state->nodes;
|
|
|
|
/*
|
|
* If memory hotplug is enabled (slot > 0) or memory devices are enabled
|
|
* (ms->maxram_size > ram_size) but without '-numa' options explicitly on
|
|
* CLI, guests will break.
|
|
*
|
|
* Windows: won't enable memory hotplug without SRAT table at all
|
|
*
|
|
* Linux: if QEMU is started with initial memory all below 4Gb
|
|
* and no SRAT table present, guest kernel will use nommu DMA ops,
|
|
* which breaks 32bit hw drivers when memory is hotplugged and
|
|
* guest tries to use it with that drivers.
|
|
*
|
|
* Enable NUMA implicitly by adding a new NUMA node automatically.
|
|
*
|
|
* Or if MachineClass::auto_enable_numa is true and no NUMA nodes,
|
|
* assume there is just one node with whole RAM.
|
|
*/
|
|
if (ms->numa_state->num_nodes == 0 &&
|
|
((ms->ram_slots && mc->auto_enable_numa_with_memhp) ||
|
|
(ms->maxram_size > ms->ram_size && mc->auto_enable_numa_with_memdev) ||
|
|
mc->auto_enable_numa)) {
|
|
NumaNodeOptions node = { };
|
|
parse_numa_node(ms, &node, &error_abort);
|
|
numa_info[0].node_mem = ram_size;
|
|
}
|
|
|
|
assert(max_numa_nodeid <= MAX_NODES);
|
|
|
|
/* No support for sparse NUMA node IDs yet: */
|
|
for (i = max_numa_nodeid - 1; i >= 0; i--) {
|
|
/* Report large node IDs first, to make mistakes easier to spot */
|
|
if (!numa_info[i].present) {
|
|
error_report("numa: Node ID missing: %d", i);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* This must be always true if all nodes are present: */
|
|
assert(ms->numa_state->num_nodes == max_numa_nodeid);
|
|
|
|
if (ms->numa_state->num_nodes > 0) {
|
|
uint64_t numa_total;
|
|
|
|
if (ms->numa_state->num_nodes > MAX_NODES) {
|
|
ms->numa_state->num_nodes = MAX_NODES;
|
|
}
|
|
|
|
/* If no memory size is given for any node, assume the default case
|
|
* and distribute the available memory equally across all nodes
|
|
*/
|
|
for (i = 0; i < ms->numa_state->num_nodes; i++) {
|
|
if (numa_info[i].node_mem != 0) {
|
|
break;
|
|
}
|
|
}
|
|
if (i == ms->numa_state->num_nodes) {
|
|
assert(mc->numa_auto_assign_ram);
|
|
mc->numa_auto_assign_ram(mc, numa_info,
|
|
ms->numa_state->num_nodes, ram_size);
|
|
if (!qtest_enabled()) {
|
|
warn_report("Default splitting of RAM between nodes is deprecated,"
|
|
" Use '-numa node,memdev' to explictly define RAM"
|
|
" allocation per node");
|
|
}
|
|
}
|
|
|
|
numa_total = 0;
|
|
for (i = 0; i < ms->numa_state->num_nodes; i++) {
|
|
numa_total += numa_info[i].node_mem;
|
|
}
|
|
if (numa_total != ram_size) {
|
|
error_report("total memory for NUMA nodes (0x%" PRIx64 ")"
|
|
" should equal RAM size (0x" RAM_ADDR_FMT ")",
|
|
numa_total, ram_size);
|
|
exit(1);
|
|
}
|
|
|
|
if (!numa_uses_legacy_mem() && mc->default_ram_id) {
|
|
if (ms->ram_memdev_id) {
|
|
error_report("'-machine memory-backend' and '-numa memdev'"
|
|
" properties are mutually exclusive");
|
|
exit(1);
|
|
}
|
|
ms->ram = g_new(MemoryRegion, 1);
|
|
memory_region_init(ms->ram, OBJECT(ms), mc->default_ram_id,
|
|
ram_size);
|
|
numa_init_memdev_container(ms, ms->ram);
|
|
}
|
|
/* QEMU needs at least all unique node pair distances to build
|
|
* the whole NUMA distance table. QEMU treats the distance table
|
|
* as symmetric by default, i.e. distance A->B == distance B->A.
|
|
* Thus, QEMU is able to complete the distance table
|
|
* initialization even though only distance A->B is provided and
|
|
* distance B->A is not. QEMU knows the distance of a node to
|
|
* itself is always 10, so A->A distances may be omitted. When
|
|
* the distances of two nodes of a pair differ, i.e. distance
|
|
* A->B != distance B->A, then that means the distance table is
|
|
* asymmetric. In this case, the distances for both directions
|
|
* of all node pairs are required.
|
|
*/
|
|
if (ms->numa_state->have_numa_distance) {
|
|
/* Validate enough NUMA distance information was provided. */
|
|
validate_numa_distance(ms);
|
|
|
|
/* Validation succeeded, now fill in any missing distances. */
|
|
complete_init_numa_distance(ms);
|
|
}
|
|
}
|
|
}
|
|
|
|
void parse_numa_opts(MachineState *ms)
|
|
{
|
|
qemu_opts_foreach(qemu_find_opts("numa"), parse_numa, ms, &error_fatal);
|
|
}
|
|
|
|
void numa_cpu_pre_plug(const CPUArchId *slot, DeviceState *dev, Error **errp)
|
|
{
|
|
int node_id = object_property_get_int(OBJECT(dev), "node-id", &error_abort);
|
|
|
|
if (node_id == CPU_UNSET_NUMA_NODE_ID) {
|
|
/* due to bug in libvirt, it doesn't pass node-id from props on
|
|
* device_add as expected, so we have to fix it up here */
|
|
if (slot->props.has_node_id) {
|
|
object_property_set_int(OBJECT(dev), "node-id",
|
|
slot->props.node_id, errp);
|
|
}
|
|
} else if (node_id != slot->props.node_id) {
|
|
error_setg(errp, "invalid node-id, must be %"PRId64,
|
|
slot->props.node_id);
|
|
}
|
|
}
|
|
|
|
static void numa_stat_memory_devices(NumaNodeMem node_mem[])
|
|
{
|
|
MemoryDeviceInfoList *info_list = qmp_memory_device_list();
|
|
MemoryDeviceInfoList *info;
|
|
PCDIMMDeviceInfo *pcdimm_info;
|
|
VirtioPMEMDeviceInfo *vpi;
|
|
VirtioMEMDeviceInfo *vmi;
|
|
|
|
for (info = info_list; info; info = info->next) {
|
|
MemoryDeviceInfo *value = info->value;
|
|
|
|
if (value) {
|
|
switch (value->type) {
|
|
case MEMORY_DEVICE_INFO_KIND_DIMM:
|
|
case MEMORY_DEVICE_INFO_KIND_NVDIMM:
|
|
pcdimm_info = value->type == MEMORY_DEVICE_INFO_KIND_DIMM ?
|
|
value->u.dimm.data : value->u.nvdimm.data;
|
|
node_mem[pcdimm_info->node].node_mem += pcdimm_info->size;
|
|
node_mem[pcdimm_info->node].node_plugged_mem +=
|
|
pcdimm_info->size;
|
|
break;
|
|
case MEMORY_DEVICE_INFO_KIND_VIRTIO_PMEM:
|
|
vpi = value->u.virtio_pmem.data;
|
|
/* TODO: once we support numa, assign to right node */
|
|
node_mem[0].node_mem += vpi->size;
|
|
node_mem[0].node_plugged_mem += vpi->size;
|
|
break;
|
|
case MEMORY_DEVICE_INFO_KIND_VIRTIO_MEM:
|
|
vmi = value->u.virtio_mem.data;
|
|
node_mem[vmi->node].node_mem += vmi->size;
|
|
node_mem[vmi->node].node_plugged_mem += vmi->size;
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
}
|
|
qapi_free_MemoryDeviceInfoList(info_list);
|
|
}
|
|
|
|
void query_numa_node_mem(NumaNodeMem node_mem[], MachineState *ms)
|
|
{
|
|
int i;
|
|
|
|
if (ms->numa_state == NULL || ms->numa_state->num_nodes <= 0) {
|
|
return;
|
|
}
|
|
|
|
numa_stat_memory_devices(node_mem);
|
|
for (i = 0; i < ms->numa_state->num_nodes; i++) {
|
|
node_mem[i].node_mem += ms->numa_state->nodes[i].node_mem;
|
|
}
|
|
}
|
|
|
|
void ram_block_notifier_add(RAMBlockNotifier *n)
|
|
{
|
|
QLIST_INSERT_HEAD(&ram_list.ramblock_notifiers, n, next);
|
|
}
|
|
|
|
void ram_block_notifier_remove(RAMBlockNotifier *n)
|
|
{
|
|
QLIST_REMOVE(n, next);
|
|
}
|
|
|
|
void ram_block_notify_add(void *host, size_t size)
|
|
{
|
|
RAMBlockNotifier *notifier;
|
|
|
|
QLIST_FOREACH(notifier, &ram_list.ramblock_notifiers, next) {
|
|
notifier->ram_block_added(notifier, host, size);
|
|
}
|
|
}
|
|
|
|
void ram_block_notify_remove(void *host, size_t size)
|
|
{
|
|
RAMBlockNotifier *notifier;
|
|
|
|
QLIST_FOREACH(notifier, &ram_list.ramblock_notifiers, next) {
|
|
notifier->ram_block_removed(notifier, host, size);
|
|
}
|
|
}
|