Re: [Xen-users] pvops spinlock crash

[Tim Evers <it@xxxxxxxxxx>]

Am 22.11.11 15:42, schrieb Tim Evers:
> I have a lucid domu running kernel 2.6.35.13 which crashes at boot time
> with error:
> 
> [ 0.210000] kernel BUG at
> /build/buildd/linux-lts-backport-maverick-2.6.35/arch/x86/xen/spinlock.c:344!
> [ 0.210000] invalid opcode: 0000 [#1] SMP
> [ 0.210000] last sysfs file:
> [ 0.210000] CPU 5
> [ 0.210000] Modules linked in:
> [ 0.210000]
> [ 0.210000] Pid: 18, comm: migration/5 Not tainted 2.6.35-31-virtual
> #62~lucid1-Ubuntu /
> 
> Disabling CONFIG_PARAVIRT_SPINLOCKS in domu kernel configs solves this
> crash. Various xen and dom0 versions do not work with
> CONFIG_PARAVIRT_SPINLOCKS on:
> 
> xen-4.0.1 / 2.6.32.31
> xen-4.0.4-rc1-pre / 3.1.2
> xen-4.1.3-rc1-pre / 3.1.2
> xen-4.0.4-rc1-pre / 2.6.32.31
> 
> Any idea anyone what might be happenigng here?

Additional info:

this only happens if more cpus are configured than used (maxvcpus > vcpus)

Regards,

Tim


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