rtc"tickpolicy="catchup"/><timer name="pit"tickpolicy="delay"/><timer name="hpet"present="no"/></clock><on_poweroff>destroy</on_poweroff><on_reboot>restart</on_reboot><on_crash>restart</on_crash><devices><emulator>/usr/bin/qemu-system-x86_64</emulator><disk type="file"device="...
在多numa node的物理机中,pci bus常常是连接到其中一个numa上。如此,不同的numa节点访问该pci bus下的设备的访问速度是不同的。基于此常常要将访问该设备的负载绑定到对应的numa node上可以提供性能。 对于qemu虚拟机也可以模拟pci bus与numa之间的亲和性。在x86机器中,只有pxb和pxb-pcie总线支持设置numa节点。其...
static pcibus_t pci_bar_address(PCIDevice *d, int reg, uint8_t type, pcibus_t size) { pcibus_t new_addr, last_addr; /*获得region里基地址的偏移位置*/ int bar = pci_bar(d, reg); /*检查PCI设备IO是否分配,分配以后command应该置1*/ uint16_t cmd = pci_get_word(d->config + PCI...
[ 1.082300] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 1.082700] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 1.083183] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff wi] [ 1.083590] pci_bus 0000:00: root bus resource ...
error_setg(errp, "No '%s' bus found for device '%s'", dc->bus_type, driver); return NULL; } } if (qdev_hotplug && bus && !qbus_is_hotpluggable(bus)) { error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name); return NULL; ...
{ struct VFIOPCIDevice *vdev; pcibus_t offset; uint8_t bar; MemoryRegion *mem; } VFIOAscendBarQuirk; static uint64_t vfio_ascend_quirk_read(void *opaque, hwaddr addr, unsigned size) { VFIOAscendBarQuirk *quirk = opaque; VFIOPCIDevice *vdev = quirk->vdev; qemu_log("read RO ...
-monitor telnet:127.0.0.1:4444,server,nowait \ -device pcie-root-port,bus=pcie.0,id=root_port \ -device e1000e,bus=root_port \ -append "console=ttyAMA0 root=/dev/ram rdinit=/init acpi=on kpti=off" \ -nographic \ -device pcie-root-port,bus=pcie.0,id=root_port \ ...
-device pcie-root-port,port=0x1,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x1 \ #PCIE拓扑-device pcie-root-port,port=0x2,chassis=2,id=pci.2,bus=pcie.0,addr=0x2 \ -device pcie-root-port,port=0x3,chassis=3,id=pci.3,bus=pcie.0,addr=0x3 \ ...
{ "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X }, { "virtio-input-host-pci", "virtio-input-host", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, ...
The QEMU command line to use a SCSI device using virtio-blk is:sudo qemu-system-ppc64 (...) -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 \ -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=2,drive=drive-scsi0-0-0-2,id=scsi0-0-0-2 \ -drive file=/dev/disk/by...