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hw/pci: add support for NUMA nodes

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PCI root buses can be attached to a specific NUMA node.
PCI buses are not attached by default to a NUMA node.

Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Marcel Apfelbaum 2015-06-02 14:23:09 +03:00 committed by Michael S. Tsirkin
parent 0639b00d05
commit 6a3042b23b
4 changed files with 14 additions and 0 deletions
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11
hw/pci/pci.c
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@ -101,6 +101,11 @@ static int pcibus_num(PCIBus *bus)
return bus->parent_dev->config[PCI_SECONDARY_BUS];
}
static uint16_t pcibus_numa_node(PCIBus *bus)
{
return NUMA_NODE_UNASSIGNED;
}
static void pci_bus_class_init(ObjectClass *klass, void *data)
{
BusClass *k = BUS_CLASS(klass);
@ -115,6 +120,7 @@ static void pci_bus_class_init(ObjectClass *klass, void *data)
pbc->is_root = pcibus_is_root;
pbc->bus_num = pcibus_num;
pbc->numa_node = pcibus_numa_node;
}
static const TypeInfo pci_bus_info = {
@ -402,6 +408,11 @@ int pci_bus_num(PCIBus *s)
return PCI_BUS_GET_CLASS(s)->bus_num(s);
}
int pci_bus_numa_node(PCIBus *bus)
{
return PCI_BUS_GET_CLASS(bus)->numa_node(bus);
}
static int get_pci_config_device(QEMUFile *f, void *pv, size_t size)
{
PCIDevice *s = container_of(pv, PCIDevice, config);

1
include/hw/pci/pci.h
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@ -382,6 +382,7 @@ PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus,
PCIDevice *pci_vga_init(PCIBus *bus);
int pci_bus_num(PCIBus *s);
int pci_bus_numa_node(PCIBus *bus);
void pci_for_each_device(PCIBus *bus, int bus_num,
void (*fn)(PCIBus *bus, PCIDevice *d, void *opaque),
void *opaque);

1
include/hw/pci/pci_bus.h
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@ -15,6 +15,7 @@ typedef struct PCIBusClass {
bool (*is_root)(PCIBus *bus);
int (*bus_num)(PCIBus *bus);
uint16_t (*numa_node)(PCIBus *bus);
} PCIBusClass;
struct PCIBus {

1
include/sysemu/sysemu.h
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@ -137,6 +137,7 @@ extern const char *mem_path;
extern int mem_prealloc;
#define MAX_NODES 128
#define NUMA_NODE_UNASSIGNED MAX_NODES
/* The following shall be true for all CPUs:
* cpu->cpu_index < max_cpus <= MAX_CPUMASK_BITS