Hi KVM Gurus. I need some help with this problem that has existed for
the past several kernel update releases. It used to work fine, probably
back around kernel 2.6.33, but now I can't run any of my usual VM's in
KVM with a PAE-enabled kernel.
WITH PAE enabled, and WITHOUT KVM enabled (by adding the -no-kvm
option), VM's boot up fine and run, however very slowly as expected.
Or, WITHOUT PAE enabled, VM's boot up and run with or without KVM enabled.
The symptom has changed since my last kernel update, 2.6.36. AFTER
2.6.33 but BEFORE 2.6.36, it looked like right after POST the screen
would just stay black with a blinking text cursor at top-left, with CPU
at 100%.
Now, with 2.6.36, on Windows XP SP2 32-bit I can see it say "Booting
from Hard Disk..." then immediately it reboots.
On the QEMU Linux Test image (linux-0.2.img), right after "Uncompressing
Linux..." immediately it reboots.
My system is Arch Linux with all latest updates as of this writing. I
compiled my PAE kernel myself, which is from a trustworthy Arch
repository, based on the vanilla non-PAE kernel that Arch provides, with
only the CONFIG_HIGHMEM64G compile option turned on.
I know just running a 64-bit system would be nice, but this particular
system has 32-bit images that it needs to run.
Hopefully my hardware isn't too weird. It's fairly new anyway. Here's info:
$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 6
model name : AMD Turion(tm) II Dual-Core Mobile M500
stepping : 2
cpu MHz : 2194.355
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc extd_apicid
pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm
sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock
nrip_save
bogomips : 4390.57
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 1
vendor_id : AuthenticAMD
cpu family : 16
model : 6
model name : AMD Turion(tm) II Dual-Core Mobile M500
stepping : 2
cpu MHz : 2194.355
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc extd_apicid
pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm
sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock
nrip_save
bogomips : 4390.69
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
$ pacman -Qi qemu-kvm
Name : qemu-kvm
Version : 0.13.0-1
URL : http://www.linux-kvm.org
Licenses : GPL2 LGPL2.1
Groups : None
Provides : qemu
Depends On : libjpeg libpng libsasl curl sdl alsa-lib esound
gnutls>=2.4.1 bluez vde2 util-linux-ng
Optional Deps : None
Required By : qemu-launcher
Conflicts With : qemu
Replaces : kvm
Installed Size : 6484.00 K
Packager : Tobias Powalowski <tpowa@xxxxxxxxxxxxx>
Architecture : i686
Build Date : Sun 31 Oct 2010 03:36:52 AM CDT
Install Date : Sun 28 Nov 2010 02:39:39 AM CST
Install Reason : Explicitly installed
Install Script : Yes
Description : Latest KVM QEMU is a generic and open source processor
emulator which achieves a good emulation speed by using dynamic translation.
$ uname -a
Linux danbook.danamis.com 2.6.36-pae #1 SMP PREEMPT Sun Nov 28 01:08:27
CST 2010 i686 AMD Turion(tm) II Dual-Core Mobile M500 AuthenticAMD GNU/Linux
$ pacman -Qi kernel26-pae
Name : kernel26-pae
Version : 2.6.36.1-3
URL : http://www.kernel.org
Licenses : GPL2
Groups : base
Provides : None
Depends On : coreutils linux-firmware module-init-tools
mkinitcpio>=0.5.20
Optional Deps : crda: to set the correct wireless channels of your country
Required By : None
Conflicts With : None
Replaces : kernel24 kernel24-scsi kernel26-scsi alsa-driver
ieee80211 hostap-driver26 pwc nforce squashfs unionfs ivtv
zd1211 kvm-modules iwlwifi
rt2x00-cvs gspcav1 atl2 wlan-ng26 rt2500 nouveau-drm
Installed Size : 89760.00 K
Packager : Dan Higgins <dan@xxxxxxxxxxx>
Architecture : i686
Build Date : Sun 28 Nov 2010 01:16:14 AM CST
Install Date : Sun 28 Nov 2010 01:21:04 AM CST
Install Reason : Explicitly installed
Install Script : Yes
Description : The Linux Kernel and modules with PAE support (HIGHMEM64G)
Command line that does NOT work:
qemu -m 1G -hda '/home/dan/tmp/linux-0.2.img'
As I mentioned before, adding "-no-kvm" to the above will work.
Let me know what is the best next step on this. Thanks very much in
advance for any guidance.
Regards,
Dan
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