VirtualBox

Opened 14 years ago

Last modified 8 years ago

#7522 closed defect

CPU Hotplug / Hot-unplug is unstable — at Version 1

Reported by: Technologov Owned by:
Component: guest smp Version: VirtualBox 3.2.8
Keywords: Cc:
Guest type: Linux Host type: other

Description (last modified by Frank Mehnert)

Host: Windows XP, Core 2 Q6600, VBox 3.2.8.
Guest: openSUSE 11.3 64-bit (and other Linuxes)

I did:

VBoxManage modifyvm <vmname> --cpuhotplug on
VBoxManage modifyvm <vmname> --cpus 2

after VM booted...

Several time re-plugged CPU:

VBoxManage controlvm <vmname> plugcpu 1
VBoxManage controlvm <vmname> unplugcpu 1

From inside guest: (openSUSE 11.3 64-bit)

linux-0gkn:~ # dmesg | tail
[  870.449212] microcode: CPU0 update to revision 0xb6 failed
[  870.488455] microcode: CPU1 update to revision 0xb6 failed
[  870.515200] microcode: CPU0 update to revision 0xb6 failed
[  870.537351] microcode: CPU1 update to revision 0xb6 failed
[  870.557087] microcode: CPU0 update to revision 0xb6 failed
[  870.584368] microcode: CPU1 update to revision 0xb6 failed
[  873.845725] CPU 1 is now offline
[  873.845725] SMP alternatives: switching to UP code
[  884.070333] VBoxService[1412]: segfault at 2800568e70
    ip 0000000000409235 sp 00007f644d05cb80 error 4
    in VBoxService[400000+69000]
[  884.071618] ACPI: Device don't exist, dropping EJECT

Similar, but different problems were seen on many other guest OSes: RHEL6 (BETA1), Fedora12, openSUSE 11.0/11.1/11.2 (32+64bit), ...

For now, only under Fedora 13 this feature magically worked. VBox log attached.

--

-"Technologov", 28.9.2010

Change History (2)

by Technologov, 14 years ago

VBox Log

comment:1 by Frank Mehnert, 14 years ago

Description: modified (diff)
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