0f203430dd
This patch is going to add SLIT table support in QEMU, and provides additional option `dist` for command `-numa` to allow user set vNUMA distance by QEMU command. With this patch, when a user wants to create a guest that contains several vNUMA nodes and also wants to set distance among those nodes, the QEMU command would like: ``` -numa node,nodeid=0,cpus=0 \ -numa node,nodeid=1,cpus=1 \ -numa node,nodeid=2,cpus=2 \ -numa node,nodeid=3,cpus=3 \ -numa dist,src=0,dst=1,val=21 \ -numa dist,src=0,dst=2,val=31 \ -numa dist,src=0,dst=3,val=41 \ -numa dist,src=1,dst=2,val=21 \ -numa dist,src=1,dst=3,val=31 \ -numa dist,src=2,dst=3,val=21 \ ``` Signed-off-by: He Chen <he.chen@linux.intel.com> Message-Id: <1493260558-20728-1-git-send-email-he.chen@linux.intel.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
#ifndef SYSEMU_NUMA_H
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#define SYSEMU_NUMA_H
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#include "qemu/bitmap.h"
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#include "qemu/option.h"
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#include "sysemu/sysemu.h"
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#include "sysemu/hostmem.h"
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#include "hw/boards.h"
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extern int nb_numa_nodes; /* Number of NUMA nodes */
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extern bool have_numa_distance;
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struct numa_addr_range {
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ram_addr_t mem_start;
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ram_addr_t mem_end;
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QLIST_ENTRY(numa_addr_range) entry;
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};
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typedef struct node_info {
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uint64_t node_mem;
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unsigned long *node_cpu;
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struct HostMemoryBackend *node_memdev;
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bool present;
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QLIST_HEAD(, numa_addr_range) addr; /* List to store address ranges */
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uint8_t distance[MAX_NODES];
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} NodeInfo;
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extern NodeInfo numa_info[MAX_NODES];
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void parse_numa_opts(MachineClass *mc);
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void numa_post_machine_init(void);
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void query_numa_node_mem(uint64_t node_mem[]);
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extern QemuOptsList qemu_numa_opts;
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void numa_set_mem_node_id(ram_addr_t addr, uint64_t size, uint32_t node);
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void numa_unset_mem_node_id(ram_addr_t addr, uint64_t size, uint32_t node);
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uint32_t numa_get_node(ram_addr_t addr, Error **errp);
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/* on success returns node index in numa_info,
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* on failure returns nb_numa_nodes */
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int numa_get_node_for_cpu(int idx);
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#endif
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