QEMU commandline: ./x86_64-softmmu/qemu-system-x86_64 --enable-kvm -m 2000 -drive file=/images/nolvm.qcow2 --kernel /home/devel/linux/arch/x86/boot/bzImage -append "ro root=/dev/sda1 console=ttyS0,115200" -monitor unix:/tmp/m,nowait,server -device virtio-net-pci,netdev=h0,vectors=17,mq=on,id=n0 -netdev tap,id=h0,queues=8 -device virtio-net-pci,netdev=h1,vectors=0,mq=on,id=n1 -netdev tap,id=h1,queues=8 -vnc :0 -mon chardev=qmp,mode=control,pretty=on -chardev socket,id=qmp,host=localhost,port=1234,server,nowait -serial stdio -object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0,id=h0 -object rng-random,filename=/dev/urandom,id=rng1 -device virtio-rng-pci,rng=rng1,id=h1 It works when I only add one virtio-rng device. Did you touch this problem? I'm using latest net-next/master (ac3d2e5a9ef2f4d8f57c50070c4883ecb7cec29f) [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 3.16.0-rc6+ (amos@z) (gcc version 4.8.3 20140624 (Red Hat 4.8.3-1) (GCC) ) #363 SMP Mon Jul 28 15:05:44 CST 2014 [ 0.000000] Command line: ro root=/dev/sda1 console=ttyS0,115200 [ 0.000000] e820: BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000007cffdfff] usable [ 0.000000] BIOS-e820: [mem 0x000000007cffe000-0x000000007cffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.8 present. [ 0.000000] Hypervisor detected: KVM [ 0.000000] AGP: No AGP bridge found [ 0.000000] e820: last_pfn = 0x7cffe max_arch_pfn = 0x400000000 [ 0.000000] PAT not supported by CPU. [ 0.000000] found SMP MP-table at [mem 0x000f0e90-0x000f0e9f] mapped at [ffff8800000f0e90] [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] [ 0.000000] init_memory_mapping: [mem 0x7cc00000-0x7cdfffff] [ 0.000000] init_memory_mapping: [mem 0x7c000000-0x7cbfffff] [ 0.000000] init_memory_mapping: [mem 0x00100000-0x7bffffff] [ 0.000000] init_memory_mapping: [mem 0x7ce00000-0x7cffdfff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000F0C90 000014 (v00 BOCHS ) [ 0.000000] ACPI: RSDT 0x000000007CFFFEF0 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACP 0x000000007CFFF1D3 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.000000] ACPI: DSDT 0x000000007CFFE040 001193 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACS 0x000000007CFFE000 000040 [ 0.000000] ACPI: SSDT 0x000000007CFFF247 000BF9 (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: APIC 0x000000007CFFFE40 000078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.000000] ACPI: HPET 0x000000007CFFFEB8 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at [mem 0x0000000000000000-0x000000007cffdfff] [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x7cffdfff] [ 0.000000] NODE_DATA [mem 0x7cfea000-0x7cffdfff] [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: cpu 0, msr 0:7cfe8001, primary cpu clock [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x00001000-0x00ffffff] [ 0.000000] DMA32 [mem 0x01000000-0xffffffff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x00001000-0x0009efff] [ 0.000000] node 0: [mem 0x00100000-0x7cffdfff] [ 0.000000] ACPI: PM-Timer IO Port: 0x608 [ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.000000] ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0]) [ 0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs [ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.000000] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.000000] e820: [mem 0x7d000000-0xfeffbfff] available for PCI devices [ 0.000000] Booting paravirtualized kernel on KVM [ 0.000000] setup_percpu: NR_CPUS:128 nr_cpumask_bits:128 nr_cpu_ids:1 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 27 pages/cpu @ffff88007cc00000 s81152 r8192 d21248 u2097152 [ 0.000000] KVM setup async PF for cpu 0 [ 0.000000] kvm-stealtime: cpu 0, msr 7cc0d080 [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 503879 [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: ro root=/dev/sda1 console=ttyS0,115200 [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] AGP: Checking aperture... [ 0.000000] AGP: No AGP bridge found [ 0.000000] Memory: 1998212K/2047600K available (6874K kernel code, 1055K rwdata, 3048K rodata, 1416K init, 1416K bss, 49388K reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU restricting CPUs from NR_CPUS=128 to nr_cpu_ids=1. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 [ 0.000000] NR_IRQS:8448 nr_irqs:256 16 [ 0.000000] Console: colour VGA+ 80x25 [ 0.000000] console [ttyS0] enabled [ 0.000000] allocated 8388608 bytes of page_cgroup [ 0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups [ 0.000000] tsc: Detected 2893.428 MHz processor [ 0.002000] Calibrating delay loop (skipped) preset value.. 5786.85 BogoMIPS (lpj=2893428) [ 0.002382] pid_max: default: 32768 minimum: 301 [ 0.003011] ACPI: Core revision 20140424 [ 0.004747] ACPI: All ACPI Tables successfully acquired [ 0.005000] Security Framework initialized [ 0.005000] SELinux: Initializing. [ 0.005220] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes) [ 0.006589] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes) [ 0.007188] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes) [ 0.008007] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes) [ 0.009153] Initializing cgroup subsys memory [ 0.010038] Initializing cgroup subsys devices [ 0.011007] Initializing cgroup subsys freezer [ 0.011552] Initializing cgroup subsys net_cls [ 0.012006] Initializing cgroup subsys blkio [ 0.012534] Initializing cgroup subsys perf_event [ 0.013054] mce: CPU supports 10 MCE banks [ 0.014020] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 [ 0.014020] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 [ 0.014020] tlb_flushall_shift: 6 [ 0.025553] Freeing SMP alternatives memory: 24K (ffffffff81e6b000 - ffffffff81e71000) [ 0.029326] ftrace: allocating 25929 entries in 102 pages [ 0.036206] Enabling x2apic [ 0.036598] Enabled x2apic [ 0.037003] Switched APIC routing to physical x2apic. [ 0.038554] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.039001] smpboot: CPU0: Intel QEMU Virtual CPU version 2.0.92 (fam: 06, model: 06, stepping: 03) [ 0.041000] Performance Events: Broken PMU hardware detected, using software events only. [ 0.041004] Failed to access perfctr msr (MSR c1 is 0) [ 0.042606] x86: Booted up 1 node, 1 CPUs [ 0.043002] smpboot: Total of 1 processors activated (5786.85 BogoMIPS) [ 0.044104] NMI watchdog: disabled (cpu0): hardware events not enabled [ 0.044959] devtmpfs: initialized [ 0.046107] atomic64_test: passed for x86-64 platform with CX8 and with SSE [ 0.047002] RTC time: 7:25:09, date: 07/28/14 [ 0.047609] NET: Registered protocol family 16 [ 0.048079] cpuidle: using governor ladder [ 0.048578] cpuidle: using governor menu [ 0.049043] ACPI: bus type PCI registered [ 0.049526] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.050090] PCI: Using configuration type 1 for base access [ 0.052452] ACPI: Added _OSI(Module Device) [ 0.052991] ACPI: Added _OSI(Processor Device) [ 0.053002] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.054001] ACPI: Added _OSI(Processor Aggregator Device) [ 0.055921] ACPI: Interpreter enabled [ 0.056004] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20140424/hwxface-580) [ 0.057270] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20140424/hwxface-580) [ 0.058287] ACPI: (supports S0 S3 S4 S5) [ 0.059001] ACPI: Using IOAPIC for interrupt routing [ 0.059602] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 0.062395] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 0.063005] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI] [ 0.064005] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 0.064840] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 0.065287] acpiphp: Slot [3] registered [ 0.066045] acpiphp: Slot [4] registered [ 0.067032] acpiphp: Slot [5] registered [ 0.067739] acpiphp: Slot [6] registered [ 0.068028] acpiphp: Slot [7] registered [ 0.068422] acpiphp: Slot [8] registered [ 0.069017] acpiphp: Slot [9] registered [ 0.069452] acpiphp: Slot [10] registered [ 0.070001] acpiphp: Slot [11] registered [ 0.070363] acpiphp: Slot [12] registered [ 0.070754] acpiphp: Slot [13] registered [ 0.071016] acpiphp: Slot [14] registered [ 0.071380] acpiphp: Slot [15] registered [ 0.071803] acpiphp: Slot [16] registered [ 0.072016] acpiphp: Slot [17] registered [ 0.072412] acpiphp: Slot [18] registered [ 0.073015] acpiphp: Slot [19] registered [ 0.073396] acpiphp: Slot [20] registered [ 0.073783] acpiphp: Slot [21] registered [ 0.074015] acpiphp: Slot [22] registered [ 0.074446] acpiphp: Slot [23] registered [ 0.075016] acpiphp: Slot [24] registered [ 0.075539] acpiphp: Slot [25] registered [ 0.076016] acpiphp: Slot [26] registered [ 0.076515] acpiphp: Slot [27] registered [ 0.077016] acpiphp: Slot [28] registered [ 0.077513] acpiphp: Slot [29] registered [ 0.078016] acpiphp: Slot [30] registered [ 0.078526] acpiphp: Slot [31] registered [ 0.079009] PCI host bridge to bus 0000:00 [ 0.079504] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.080002] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7] [ 0.081002] pci_bus 0000:00: root bus resource [io 0x0d00-0xadff] [ 0.081737] pci_bus 0000:00: root bus resource [io 0xae0f-0xaeff] [ 0.082002] pci_bus 0000:00: root bus resource [io 0xaf20-0xafdf] [ 0.083002] pci_bus 0000:00: root bus resource [io 0xafe4-0xffff] [ 0.084009] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff] [ 0.085003] pci_bus 0000:00: root bus resource [mem 0x7d000000-0xfebfffff] [ 0.091716] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] [ 0.092002] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6] [ 0.093002] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] [ 0.094002] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376] [ 0.095399] pci 0000:00:01.3: quirk: [io 0x0600-0x063f] claimed by PIIX4 ACPI [ 0.096009] pci 0000:00:01.3: quirk: [io 0x0700-0x070f] claimed by PIIX4 SMB [ 0.132469] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 0.133279] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 0.134293] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 0.135102] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 0.135871] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 0.136357] ACPI: Enabled 16 GPEs in block 00 to 0F [ 0.137088] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none [ 0.138001] vgaarb: loaded [ 0.138342] vgaarb: bridge control possible 0000:00:02.0 [ 0.139061] SCSI subsystem initialized [ 0.140012] ACPI: bus type USB registered [ 0.140507] usbcore: registered new interface driver usbfs [ 0.141009] usbcore: registered new interface driver hub [ 0.141655] usbcore: registered new device driver usb [ 0.142046] PCI: Using ACPI for IRQ routing [ 0.143172] NetLabel: Initializing [ 0.143587] NetLabel: domain hash size = 128 [ 0.144002] NetLabel: protocols = UNLABELED CIPSOv4 [ 0.144610] NetLabel: unlabeled traffic allowed by default [ 0.145037] HPET: 3 timers in total, 0 timers will be used for per-cpu timer [ 0.146015] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 0.146653] hpet0: 3 comparators, 64-bit 100.000000 MHz counter [ 0.151059] Switched to clocksource kvm-clock [ 0.155268] pnp: PnP ACPI init [ 0.155712] ACPI: bus type PNP registered [ 0.156621] pnp: PnP ACPI: found 6 devices [ 0.157127] ACPI: bus type PNP unregistered [ 0.163277] NET: Registered protocol family 2 [ 0.163949] TCP established hash table entries: 16384 (order: 5, 131072 bytes) [ 0.164866] TCP bind hash table entries: 16384 (order: 6, 262144 bytes) [ 0.165692] TCP: Hash tables configured (established 16384 bind 16384) [ 0.166488] TCP: reno registered [ 0.166886] UDP hash table entries: 1024 (order: 3, 32768 bytes) [ 0.167613] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes) [ 0.168492] NET: Registered protocol family 1 [ 0.169048] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 0.169769] pci 0000:00:01.0: PIIX3: Enabling Passive Release [ 0.170485] pci 0000:00:01.0: Activating ISA DMA hang workarounds [ 0.171866] futex hash table entries: 256 (order: 2, 16384 bytes) [ 0.172645] Initialise system trusted keyring [ 0.173222] audit: initializing netlink subsys (disabled) [ 0.173907] audit: type=2000 audit(1406532309.432:1): initialized [ 0.174810] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 0.176647] VFS: Disk quotas dquot_6.5.2 [ 0.177176] Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.178223] msgmni has been set to 3902 [ 0.179343] alg: No test for stdrng (krng) [ 0.179884] NET: Registered protocol family 38 [ 0.180427] Key type asymmetric registered [ 0.180919] Asymmetric key parser 'x509' registered [ 0.181538] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252) [ 0.182448] io scheduler noop registered [ 0.182995] io scheduler deadline registered [ 0.183632] io scheduler cfq registered (default) [ 0.184312] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 0.184994] pciehp: PCI Express Hot Plug Controller Driver version: 0.4 [ 0.185881] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 0.186775] ACPI: Power Button [PWRF] [ 0.187315] GHES: HEST is not enabled! [ 0.188037] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11 [ 0.189546] ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 10 [ 0.191160] ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10 [ 0.193347] ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11 [ 0.195317] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 0.222140] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 0.223503] Non-volatile memory driver v1.3 [ 1.172293] tsc: Refined TSC clocksource calibration: 2893.436 MHz qemu: terminating on signal 2 <---------- (I have to cancel QEMU process by Ctrl + C) -- Amos. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
