$ ./x86_64-softmmu/qemu-system-x86_64 -m 512 -smp 2 -cpu host,+kvmclock,+x2apic -enable-kvm  -kernel ~/src/linux/arch/x86/boot/bzImage /guests/f11-auto.qcow2  -append 'root=/dev/sda2 console=ttyS0 console=tty0'  -snapshot  -serial stdio
Initializing cgroup subsys cpu
Linux version 3.16.0+ (amit@grmbl.mre) (gcc version 4.8.3 20140624 (Red Hat 4.8.3-1) (GCC) ) #79 SMP PREEMPT Fri Aug 8 22:47:38 IST 2014
Command line: root=/dev/sda2 console=ttyS0 console=tty0
e820: BIOS-provided physical RAM map:
BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
BIOS-e820: [mem 0x0000000000100000-0x000000001ffdffff] usable
BIOS-e820: [mem 0x000000001ffe0000-0x000000001fffffff] reserved
BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
NX (Execute Disable) protection: active
SMBIOS 2.8 present.
Hypervisor detected: KVM
AGP: No AGP bridge found
e820: last_pfn = 0x1ffe0 max_arch_pfn = 0x400000000
x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
init_memory_mapping: [mem 0x00000000-0x000fffff]
init_memory_mapping: [mem 0x1fc00000-0x1fdfffff]
init_memory_mapping: [mem 0x1c000000-0x1fbfffff]
init_memory_mapping: [mem 0x00100000-0x1bffffff]
init_memory_mapping: [mem 0x1fe00000-0x1ffdffff]
ACPI: Early table checksum verification disabled
ACPI: RSDP 0x00000000000F0C50 000014 (v00 BOCHS )
ACPI: RSDT 0x000000001FFE18BD 000034 (v01 BOCHS  BXPCRSDT 00000001 BXPC 00000001)
ACPI: FACP 0x000000001FFE0B37 000074 (v01 BOCHS  BXPCFACP 00000001 BXPC 00000001)
ACPI: DSDT 0x000000001FFE0040 000AF7 (v01 BOCHS  BXPCDSDT 00000001 BXPC 00000001)
ACPI: FACS 0x000000001FFE0000 000040
ACPI: SSDT 0x000000001FFE0BAB 000C5A (v01 BOCHS  BXPCSSDT 00000001 BXPC 00000001)
ACPI: APIC 0x000000001FFE1805 000080 (v01 BOCHS  BXPCAPIC 00000001 BXPC 00000001)
ACPI: HPET 0x000000001FFE1885 000038 (v01 BOCHS  BXPCHPET 00000001 BXPC 00000001)
kvm-clock: Using msrs 4b564d01 and 4b564d00
kvm-clock: cpu 0, msr 0:1ffdf001, primary cpu clock
Zone ranges:
  DMA      [mem 0x00001000-0x00ffffff]
  DMA32    [mem 0x01000000-0xffffffff]
  Normal   empty
Movable zone start for each node
Early memory node ranges
  node   0: [mem 0x00001000-0x0009efff]
  node   0: [mem 0x00100000-0x1ffdffff]
ACPI: PM-Timer IO Port: 0x608
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
Using ACPI (MADT) for SMP configuration information
ACPI: HPET id: 0x8086a201 base: 0xfed00000
smpboot: Allowing 2 CPUs, 0 hotplug CPUs
PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
e820: [mem 0x20000000-0xfeffbfff] available for PCI devices
Booting paravirtualized kernel on KVM
setup_percpu: NR_CPUS:4 nr_cpumask_bits:4 nr_cpu_ids:2 nr_node_ids:1
PERCPU: Embedded 475 pages/cpu @ffff88001f800000 s1916544 r8192 d20864 u2097152
KVM setup async PF for cpu 0
kvm-stealtime: cpu 0, msr 1f80cbc0
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 128873
Kernel command line: root=/dev/sda2 console=ttyS0 console=tty0
PID hash table entries: 2048 (order: 2, 16384 bytes)
Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
xsave: enabled xstate_bv 0x7, cntxt size 0x340
AGP: Checking aperture...
AGP: No AGP bridge found
Memory: 483812K/523768K available (4029K kernel code, 727K rwdata, 2184K rodata, 2872K init, 14172K bss, 39956K reserved)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
Preemptible hierarchical RCU implementation.
	RCU debugfs-based tracing is enabled.
	RCU lockdep checking is enabled.
	Additional per-CPU info printed with stalls.
	RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
	Offload RCU callbacks from all CPUs
	Offload RCU callbacks from CPUs: 0-1.
RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
NO_HZ: Full dynticks CPUs: 1-3.
NR_IRQS:4352 nr_irqs:512 16
Console: colour VGA+ 80x25
console [tty0] enabled
console [ttyS0] enabled
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES:  8
... MAX_LOCK_DEPTH:          48
... MAX_LOCKDEP_KEYS:        8191
... CLASSHASH_SIZE:          4096
... MAX_LOCKDEP_ENTRIES:     32768
... MAX_LOCKDEP_CHAINS:      65536
... CHAINHASH_SIZE:          32768
 memory used by lock dependency info: 8671 kB
 per task-struct memory footprint: 2688 bytes
tsc: Detected 2790.934 MHz processor
Calibrating delay loop (skipped) preset value.. 5581.86 BogoMIPS (lpj=11163736)
pid_max: default: 32768 minimum: 301
ACPI: Core revision 20140724
ACPI: All ACPI Tables successfully acquired
Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
Last level iTLB entries: 4KB 512, 2MB 8, 4MB 8
Last level dTLB entries: 4KB 512, 2MB 32, 4MB 32, 1GB 0
debug: unmapping init [mem 0xffffffff81b85000-0xffffffff81b87fff]
ftrace: allocating 17857 entries in 70 pages
..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
smpboot: CPU0: Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz (fam: 06, model: 2a, stepping: 07)
Performance Events: 16-deep LBR, SandyBridge events, Intel PMU driver.
perf_event_intel: PEBS disabled due to CPU errata, please upgrade microcode
... version:                2
... bit width:              48
... generic registers:      4
... value mask:             0000ffffffffffff
... max period:             000000007fffffff
... fixed-purpose events:   3
... event mask:             000000070000000f
KVM setup paravirtual spinlock
x86: Booting SMP configuration:
.... node  #0, CPUs:      #1
kvm-clock: cpu 1, msr 0:1ffdf041, secondary cpu clock
x86: Booted up 1 node, 2 CPUs
KVM setup async PF for cpu 1
kvm-stealtime: cpu 1, msr 1fa0cbc0
smpboot: Total of 2 processors activated (11163.73 BogoMIPS)
prandom: seed boundary self test passed
prandom: 100 self tests passed
NET: Registered protocol family 16
cpuidle: using governor ladder
cpuidle: using governor menu
ACPI: bus type PCI registered
acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
PCI: Using configuration type 1 for base access
mtrr: your CPUs had inconsistent variable MTRR settings
mtrr: your CPUs had inconsistent MTRRdefType settings
mtrr: probably your BIOS does not setup all CPUs.
mtrr: corrected configuration.
qemu: terminating on signal 2