Re: (spurious?) lockdep warning on Xen boot

From: Jeremy Fitzhardinge
Date: Tue Feb 17 2009 - 14:28:18 EST


Peter Zijlstra wrote:
Right, so you are saying you started out with IRQs enabled, and the
above local_irq_restore() would simply be the first irq-op to re-enable
it and goes splat.
Yep.

In which case your disabled from beginning 'fix' looks like the right
thing to do.

OK.

Or perhaps the second warning is real; in which case, where does the problem lie? (I guess another case of being bitten by calling __purge_vmap_area_lazy from interrupt context.)

Looks like a real problem, and yes your suggestion makes sense.

OK.

Thanks,
J
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