* [Qemu-devel] Nested KVM L2 guest hangs
@ 2015-01-09 14:08 Ariel Zeitlin
2015-01-09 14:43 ` Paolo Bonzini
0 siblings, 1 reply; 6+ messages in thread
From: Ariel Zeitlin @ 2015-01-09 14:08 UTC (permalink / raw)
To: qemu-devel
[-- Attachment #1: Type: text/plain, Size: 21097 bytes --]
Hi, all
I am trying to use nested virtualization setup and experiencing L2 guest
(Windows) hanging during boot.
I have seen some threads about it, but did not manage to make sense of how
can I work around it.
Would appreciate any guidance for a solution or workaround.
Thanks,
Ariel
Some details are attached.
*L0 logs look like this:*
[117402.803802] kvm [11772]: vcpu0 unhandled rdmsr: 0x345
[117402.823629] kvm_set_msr_common: 54 callbacks suppressed
[117402.823631] kvm [11772]: vcpu0 unhandled wrmsr: 0x680 data 0
[117402.833796] kvm [11772]: vcpu0 unhandled wrmsr: 0x6c0 data 0
[117402.843967] kvm [11772]: vcpu0 unhandled wrmsr: 0x681 data 0
[117402.854106] kvm [11772]: vcpu0 unhandled wrmsr: 0x6c1 data 0
[117402.864272] kvm [11772]: vcpu0 unhandled wrmsr: 0x682 data 0
[117402.874429] kvm [11772]: vcpu0 unhandled wrmsr: 0x6c2 data 0
[117402.884613] kvm [11772]: vcpu0 unhandled wrmsr: 0x683 data 0
[117402.893675] kvm [11772]: vcpu0 unhandled wrmsr: 0x6c3 data 0
[117402.902550] kvm [11772]: vcpu0 unhandled wrmsr: 0x684 data 0
[117402.911442] kvm [11772]: vcpu0 unhandled wrmsr: 0x6c4 data 0
At the time of the hanging this line is added:
nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported
*L1 logs look like this:*
Jan 9 11:34:43 hpvm---2 kernel: [ 217.975781] kvm [2106]: vcpu0 disabled
perfctr wrmsr: 0xc1 data 0xffff
*The setup details are as follows:*
------------------------------------------------
*L0 - Ubuntu 14.04, kernel 3.13.0-43:*
*CPUID*
Vendor ID: "GenuineIntel"; CPUID level 13
Intel-specific functions:
Version 000206d7:
Type 0 - Original OEM
Family 6 - Pentium Pro
Model 13 -
Stepping 7
Reserved 8
Extended brand string: " Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz"
CLFLUSH instruction cache line size: 8
Initial APIC ID: 39
Hyper threading siblings: 32
Feature flags bfebfbff:
FPU Floating Point Unit
VME Virtual 8086 Mode Enhancements
DE Debugging Extensions
PSE Page Size Extensions
TSC Time Stamp Counter
MSR Model Specific Registers
PAE Physical Address Extension
MCE Machine Check Exception
CX8 COMPXCHG8B Instruction
APIC On-chip Advanced Programmable Interrupt Controller present and
enabled
SEP Fast System Call
MTRR Memory Type Range Registers
PGE PTE Global Flag
MCA Machine Check Architecture
CMOV Conditional Move and Compare Instructions
FGPAT Page Attribute Table
PSE-36 36-bit Page Size Extension
CLFSH CFLUSH instruction
DS Debug store
ACPI Thermal Monitor and Clock Ctrl
MMX MMX instruction set
FXSR Fast FP/MMX Streaming SIMD Extensions save/restore
SSE Streaming SIMD Extensions instruction set
SSE2 SSE2 extensions
SS Self Snoop
HT Hyper Threading
TM Thermal monitor
31 reserved
TLB and cache info:
5a: unknown TLB/cache descriptor
03: Data TLB: 4KB pages, 4-way set assoc, 64 entries
76: unknown TLB/cache descriptor
ff: unknown TLB/cache descriptor
b2: unknown TLB/cache descriptor
f0: unknown TLB/cache descriptor
ca: unknown TLB/cache descriptor
Processor serial: 0002-06D7-0000-0000-0000-0000
*L1 - Ubuntu 14.04, kernel 3.13.0-43*
*CPUID*
CPU 0:
vendor_id = "GenuineIntel"
version information (1/eax):
processor type = primary processor (0)
family = Intel Pentium Pro/II/III/Celeron/Core/Core 2/Atom,
AMD Athlon/Duron, Cyrix M2, VIA C3 (6)
model = 0xa (10)
stepping id = 0x1 (1)
extended family = 0x0 (0)
extended model = 0x2 (2)
(simple synth) = Intel Core i5-2000 / Core i7-2000 / Mobile Core
i3-2000 / Mobile Core i5-2000 / Mobile Core i7-2000 / Pentium
G500/G600/G800 / Celeron G400/G500/700/800/B800 / Xeon E3-1200 (Sandy
Bridge), 32nm
miscellaneous (1/ebx):
process local APIC physical ID = 0x0 (0)
cpu count = 0x0 (0)
CLFLUSH line size = 0x8 (8)
brand index = 0x0 (0)
brand id = 0x00 (0): unknown
feature information (1/edx):
x87 FPU on chip = true
virtual-8086 mode enhancement = true
debugging extensions = true
page size extensions = true
time stamp counter = true
RDMSR and WRMSR support = true
physical address extensions = true
machine check exception = true
CMPXCHG8B inst. = true
APIC on chip = true
SYSENTER and SYSEXIT = true
memory type range registers = true
PTE global bit = true
machine check architecture = true
conditional move/compare instruction = true
page attribute table = true
page size extension = true
processor serial number = false
CLFLUSH instruction = true
debug store = false
thermal monitor and clock ctrl = false
MMX Technology = true
FXSAVE/FXRSTOR = true
SSE extensions = true
SSE2 extensions = true
self snoop = true
hyper-threading / multi-core supported = false
therm. monitor = false
IA64 = false
pending break event = false
feature information (1/ecx):
PNI/SSE3: Prescott New Instructions = true
PCLMULDQ instruction = true
64-bit debug store = false
MONITOR/MWAIT = false
CPL-qualified debug store = false
VMX: virtual machine extensions = true
SMX: safer mode extensions = false
Enhanced Intel SpeedStep Technology = false
thermal monitor 2 = false
SSSE3 extensions = true
context ID: adaptive or shared L1 data = false
FMA instruction = false
CMPXCHG16B instruction = true
xTPR disable = false
perfmon and debug = false
process context identifiers = true
direct cache access = false
SSE4.1 extensions = true
SSE4.2 extensions = true
extended xAPIC support = true
MOVBE instruction = false
POPCNT instruction = true
time stamp counter deadline = true
AES instruction = true
XSAVE/XSTOR states = true
OS-enabled XSAVE/XSTOR = true
AVX: advanced vector extensions = true
F16C half-precision convert instruction = false
RDRAND instruction = false
hypervisor guest status = true
cache and TLB information (2):
0x7d: L2 cache: 2M, 8-way, sectored, 64 byte lines
0x30: L1 cache: 32K, 8-way, 64 byte lines
0x2c: L1 data cache: 32K, 8-way, 64 byte lines
processor serial number: 0002-06A1-0000-0000-0000-0000
deterministic cache parameters (4):
--- cache 0 ---
cache type = data cache (1)
cache level = 0x1 (1)
self-initializing cache level = true
fully associative cache = false
extra threads sharing this cache = 0x0 (0)
extra processor cores on this die = 0x0 (0)
system coherency line size = 0x3f (63)
physical line partitions = 0x0 (0)
ways of associativity = 0x7 (7)
WBINVD/INVD behavior on lower caches = true
inclusive to lower caches = false
complex cache indexing = false
number of sets - 1 (s) = 63
--- cache 1 ---
cache type = instruction cache (2)
cache level = 0x1 (1)
self-initializing cache level = true
fully associative cache = false
extra threads sharing this cache = 0x0 (0)
extra processor cores on this die = 0x0 (0)
system coherency line size = 0x3f (63)
physical line partitions = 0x0 (0)
ways of associativity = 0x7 (7)
WBINVD/INVD behavior on lower caches = true
inclusive to lower caches = false
complex cache indexing = false
number of sets - 1 (s) = 63
--- cache 2 ---
cache type = unified cache (3)
cache level = 0x2 (2)
self-initializing cache level = true
fully associative cache = false
extra threads sharing this cache = 0x0 (0)
extra processor cores on this die = 0x0 (0)
system coherency line size = 0x3f (63)
physical line partitions = 0x0 (0)
ways of associativity = 0xf (15)
WBINVD/INVD behavior on lower caches = true
inclusive to lower caches = false
complex cache indexing = false
number of sets - 1 (s) = 4095
MONITOR/MWAIT (5):
smallest monitor-line size (bytes) = 0x0 (0)
largest monitor-line size (bytes) = 0x0 (0)
enum of Monitor-MWAIT exts supported = true
supports intrs as break-event for MWAIT = true
number of C0 sub C-states using MWAIT = 0x0 (0)
number of C1 sub C-states using MWAIT = 0x0 (0)
number of C2 sub C-states using MWAIT = 0x0 (0)
number of C3 sub C-states using MWAIT = 0x0 (0)
number of C4 sub C-states using MWAIT = 0x0 (0)
number of C5 sub C-states using MWAIT = 0x0 (0)
number of C6 sub C-states using MWAIT = 0x0 (0)
number of C7 sub C-states using MWAIT = 0x0 (0)
Thermal and Power Management Features (6):
digital thermometer = false
Intel Turbo Boost Technology = false
ARAT always running APIC timer = false
PLN power limit notification = false
ECMD extended clock modulation duty = false
PTM package thermal management = false
digital thermometer thresholds = 0x0 (0)
ACNT/MCNT supported performance measure = false
ACNT2 available = false
performance-energy bias capability = false
extended feature flags (7):
FSGSBASE instructions = false
IA32_TSC_ADJUST MSR supported = false
BMI instruction = false
HLE hardware lock elision = false
AVX2: advanced vector extensions 2 = false
SMEP supervisor mode exec protection = false
BMI2 instructions = false
enhanced REP MOVSB/STOSB = false
INVPCID instruction = false
RTM: restricted transactional memory = false
QM: quality of service monitoring = false
deprecated FPU CS/DS = false
intel memory protection extensions = false
AVX512F: AVX-512 foundation instructions = false
RDSEED instruction = false
ADX instructions = false
SMAP: supervisor mode access prevention = false
Intel processor trace = false
AVX512PF: prefetch instructions = false
AVX512ER: exponent & reciprocal instrs = false
AVX512CD: conflict detection instrs = false
SHA instructions = false
PREFETCHWT1 = false
Direct Cache Access Parameters (9):
PLATFORM_DCA_CAP MSR bits = 0
Architecture Performance Monitoring Features (0xa/eax):
version ID = 0x2 (2)
number of counters per logical processor = 0x4 (4)
bit width of counter = 0x30 (48)
length of EBX bit vector = 0x7 (7)
Architecture Performance Monitoring Features (0xa/ebx):
core cycle event not available = false
instruction retired event not available = false
reference cycles event not available = false
last-level cache ref event not available = false
last-level cache miss event not avail = false
branch inst retired event not available = false
branch mispred retired event not avail = false
Architecture Performance Monitoring Features (0xa/edx):
number of fixed counters = 0x3 (3)
bit width of fixed counters = 0x30 (48)
XSAVE features (0xd/0):
XCR0 lower 32 bits valid bit field mask = 0x00000007
bytes required by fields in XCR0 = 0x00000340 (832)
bytes required by XSAVE/XRSTOR area = 0x00000340 (832)
XCR0 upper 32 bits valid bit field mask = 0x00000000
YMM features (0xd/2):
YMM save state byte size = 0x00000100 (256)
YMM save state byte offset = 0x00000240 (576)
LWP features (0xd/0x3e):
LWP save state byte size = 0x00000000 (0)
LWP save state byte offset = 0x00000000 (0)
hypervisor_id = "KVMKVMKVM "
hypervisor features (0x40000001/eax):
kvmclock available at MSR 0x11 = true
delays unnecessary for PIO ops = true
mmu_op = false
kvmclock available a MSR 0x4b564d00 = true
async pf enable available by MSR = true
steal clock supported = true
guest EOI optimization enabled = true
stable: no guest per-cpu warps expected = true
extended feature flags (0x80000001/edx):
SYSCALL and SYSRET instructions = true
execution disable = true
1-GB large page support = true
RDTSCP = true
64-bit extensions technology available = true
Intel feature flags (0x80000001/ecx):
LAHF/SAHF supported in 64-bit mode = true
LZCNT advanced bit manipulation = false
3DNow! PREFETCH/PREFETCHW instructions = false
brand = "Intel Xeon E312xx (Sandy Bridge)"
L1 TLB/cache information: 2M/4M pages & L1 TLB (0x80000005/eax):
instruction # entries = 0xff (255)
instruction associativity = 0x1 (1)
data # entries = 0xff (255)
data associativity = 0x1 (1)
L1 TLB/cache information: 4K pages & L1 TLB (0x80000005/ebx):
instruction # entries = 0xff (255)
instruction associativity = 0x1 (1)
data # entries = 0xff (255)
data associativity = 0x1 (1)
L1 data cache information (0x80000005/ecx):
line size (bytes) = 0x40 (64)
lines per tag = 0x1 (1)
associativity = 0x2 (2)
size (Kb) = 0x40 (64)
L1 instruction cache information (0x80000005/edx):
line size (bytes) = 0x40 (64)
lines per tag = 0x1 (1)
associativity = 0x2 (2)
size (Kb) = 0x40 (64)
L2 TLB/cache information: 2M/4M pages & L2 TLB (0x80000006/eax):
instruction # entries = 0x0 (0)
instruction associativity = L2 off (0)
data # entries = 0x0 (0)
data associativity = L2 off (0)
L2 TLB/cache information: 4K pages & L2 TLB (0x80000006/ebx):
instruction # entries = 0x200 (512)
instruction associativity = 4-way (4)
data # entries = 0x200 (512)
data associativity = 4-way (4)
L2 unified cache information (0x80000006/ecx):
line size (bytes) = 0x40 (64)
lines per tag = 0x1 (1)
associativity = 16-way (8)
size (Kb) = 0x200 (512)
L3 cache information (0x80000006/edx):
line size (bytes) = 0x0 (0)
lines per tag = 0x0 (0)
associativity = L2 off (0)
size (in 512Kb units) = 0x0 (0)
Advanced Power Management Features (0x80000007/edx):
temperature sensing diode = false
frequency ID (FID) control = false
voltage ID (VID) control = false
thermal trip (TTP) = false
thermal monitor (TM) = false
software thermal control (STC) = false
100 MHz multiplier control = false
hardware P-State control = false
TscInvariant = false
Physical Address and Linear Address Size (0x80000008/eax):
maximum physical address bits = 0x28 (40)
maximum linear (virtual) address bits = 0x30 (48)
maximum guest physical address bits = 0x0 (0)
Logical CPU cores (0x80000008/ecx):
number of CPU cores - 1 = 0x0 (0)
ApicIdCoreIdSize = 0x0 (0)
SVM Secure Virtual Machine (0x8000000a/eax):
SvmRev: SVM revision = 0x0 (0)
SVM Secure Virtual Machine (0x8000000a/edx):
nested paging = false
LBR virtualization = false
SVM lock = false
NRIP save = false
MSR based TSC rate control = false
VMCB clean bits support = false
flush by ASID = false
decode assists = false
SSSE3/SSE5 opcode set disable = false
pause intercept filter = false
pause filter threshold = false
NASID: number of address space identifiers = 0x0 (0):
(multi-processing synth): none
(multi-processing method): Intel leaf 1/4
(APIC widths synth): CORE_width=0 SMT_width=16
(APIC synth): PKG_ID=8 CORE_ID=8 SMT_ID=0
(synth) = Intel Xeon E3-1200 (Sandy Bridge), 32nm
L2 - Windows 2003 (but experience same hanging, although not in boot time,
in L2 - Linux guest)
*The execution command for L1 is:*
qemu-system-x86_64 -machine accel=kvm:tcg -name instance-00000001 -S
-machine pc-i440fx-1.5,accel=kvm,usb=off -cpu SandyBridge,+pdpe1gb,+osxsave,
+dca,+pcid,+pdcm,+xtpr,+tm2,+est,+smx,+vmx,+ds_cpl,+
monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme -m 16384 -realtime
mlock=off -smp 8,sockets=8,cores=1,threads=1 -uuid
897abedb-a2c2-4140-b994-1b4ee303a54b
-smbios type=1,manufacturer=OpenStack Foundation,product=OpenStack
Nova,version=2013.2.3,serial=44454c4c-4800-1030-8057-
b3c04f395931,uuid=897abedb-a2c2-4140-b994-1b4ee303a54b -no-user-config
-nodefaults -chardev socket,id=charmonitor,path=/
var/lib/libvirt/qemu/instance-00000001.monitor,server,nowait -mon
chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew
-no-kvm-pit-reinjection -no-shutdown -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2
-drive file=/var/lib/nova/instances/897abedb-a2c2-4140-b994-
1b4ee303a54b/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none
-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-
virtio-disk0,id=virtio-disk0,bootindex=1 -netdev
tap,fd=25,id=hostnet0,vhost=on,vhostfd=26 -device virtio-net-pci,netdev=
hostnet0,id=net0,mac=fa:16:3e:30:0e:85,bus=pci.0,addr=0x3 -chardev
file,id=charserial0,path=/var/lib/nova/instances/897abedb-
a2c2-4140-b994-1b4ee303a54b/console.log -device
isa-serial,chardev=charserial0,id=serial0
-chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1
-device usb-tablet,id=input0 -vnc 0.0.0.0:0 -k en-us -vga cirrus -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
*The execution command for L2 is:*
/usr/bin/kvm -name SP-Containers -S -machine pc-i440fx-2.0,accel=kvm,usb=off
-m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid
431ce7cc-173e-3bd0-988d-94f504b7ca4c -no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/SP-
Containers.monitor,server,nowait -mon
chardev=charmonitor,id=monitor,mode=control
-rtc base=utc -no-shutdown -boot strict=on -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive
file=/hdd/linux_dsm.qcow2,if=none,id=drive-virtio-disk0,format=qcow2
-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-
virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=22,id=hostnet0
-device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:33:50:56,bus=pci.0,addr=0x6
-netdev tap,fd=23,id=hostnet1 -device rtl8139,netdev=hostnet1,id=
net1,mac=52:54:00:35:34:50,bus=pci.0,addr=0x7 -chardev pty,id=charserial0
-device isa-serial,chardev=charserial0,id=serial0 -vnc 127.0.0.1:0 -device
cirrus-vga,id=video0,bus=pci.0,addr=0x2 -device
intel-hda,id=sound0,bus=pci.0,addr=0x3 -device
hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [Qemu-devel] Nested KVM L2 guest hangs
2015-01-09 14:08 [Qemu-devel] Nested KVM L2 guest hangs Ariel Zeitlin
@ 2015-01-09 14:43 ` Paolo Bonzini
2015-01-09 15:30 ` Ariel Zeitlin
0 siblings, 1 reply; 6+ messages in thread
From: Paolo Bonzini @ 2015-01-09 14:43 UTC (permalink / raw)
To: Ariel Zeitlin, qemu-devel
On 09/01/2015 15:08, Ariel Zeitlin wrote:
>
> At the time of the hanging this line is added:
>
> nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported
You have to try with a newer kernel.
Paolo
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [Qemu-devel] Nested KVM L2 guest hangs
2015-01-09 14:43 ` Paolo Bonzini
@ 2015-01-09 15:30 ` Ariel Zeitlin
2015-01-09 15:34 ` Paolo Bonzini
0 siblings, 1 reply; 6+ messages in thread
From: Ariel Zeitlin @ 2015-01-09 15:30 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: qemu-devel@nongnu.org
[-- Attachment #1: Type: text/plain, Size: 506 bytes --]
Hi, Paolo
We are using a pretty new kernel 3.13.0-43 as part of Ubuntu14.04.
What version would you recommend?
Do we need the upgrade on L0, L1 or both?
Thanks,
Ariel
בתאריך יום שישי, 9 בינואר 2015, Paolo Bonzini <pbonzini@redhat.com> כתב:
>
>
> On 09/01/2015 15:08, Ariel Zeitlin wrote:
> >
> > At the time of the hanging this line is added:
> >
> > nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported
>
> You have to try with a newer kernel.
>
> Paolo
>
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [Qemu-devel] Nested KVM L2 guest hangs
2015-01-09 15:30 ` Ariel Zeitlin
@ 2015-01-09 15:34 ` Paolo Bonzini
2015-01-09 15:37 ` Ariel Zeitlin
0 siblings, 1 reply; 6+ messages in thread
From: Paolo Bonzini @ 2015-01-09 15:34 UTC (permalink / raw)
To: Ariel Zeitlin; +Cc: qemu-devel@nongnu.org
On 09/01/2015 16:30, Ariel Zeitlin wrote:
> Hi, Paolo
> We are using a pretty new kernel 3.13.0-43 as part of Ubuntu14.04.
>
> What version would you recommend?
At least 3.16.
3.13 is about a year old, and nested virtualization is a very new feature.
> Do we need the upgrade on L0, L1 or both?
Start with L0, but it may be that you need to upgrade L1 as well.
Paolo
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] Nested KVM L2 guest hangs
2015-01-09 15:34 ` Paolo Bonzini
@ 2015-01-09 15:37 ` Ariel Zeitlin
0 siblings, 0 replies; 6+ messages in thread
From: Ariel Zeitlin @ 2015-01-09 15:37 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: Ori Aldor, qemu-devel@nongnu.org, Pavel Gurvich, Itamar Tal
[-- Attachment #1: Type: text/plain, Size: 547 bytes --]
Thanks, will try that
בתאריך יום שישי, 9 בינואר 2015, Paolo Bonzini <pbonzini@redhat.com> כתב:
>
>
> On 09/01/2015 16:30, Ariel Zeitlin wrote:
> > Hi, Paolo
> > We are using a pretty new kernel 3.13.0-43 as part of Ubuntu14.04.
> >
> > What version would you recommend?
>
> At least 3.16.
>
> 3.13 is about a year old, and nested virtualization is a very new feature.
>
> > Do we need the upgrade on L0, L1 or both?
>
> Start with L0, but it may be that you need to upgrade L1 as well.
>
> Paolo
>
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] Nested KVM L2 guest hangs
@ 2015-01-23 15:53 Chris J Arges
0 siblings, 0 replies; 6+ messages in thread
From: Chris J Arges @ 2015-01-23 15:53 UTC (permalink / raw)
To: ariel; +Cc: qemu-devel
Ariel,
You can easily use a supported 3.16 kernel on Ubuntu 14.04:
sudo apt-get install --install-recommends linux-generic-lts-utopic
If you have further problems with 3.16 or 3.13 on the distro kernel
please feel free to file a bug:
https://bugs.launchpad.net/ubuntu/+filebug
Hope that helps.
Thanks!
--chris j arges
^ permalink raw reply [flat|nested] 6+ messages in thread
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2015-01-09 14:08 [Qemu-devel] Nested KVM L2 guest hangs Ariel Zeitlin
2015-01-09 14:43 ` Paolo Bonzini
2015-01-09 15:30 ` Ariel Zeitlin
2015-01-09 15:34 ` Paolo Bonzini
2015-01-09 15:37 ` Ariel Zeitlin
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