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port-i386/38289: a possible problem in x86 pmap_update
>Synopsis: a possible problem in x86 pmap_update
>Arrival-Date: Mon Mar 24 09:10:00 +0000 2008
>Originator: YAMAMOTO Takashi <yamt%mwd.biglobe.ne.jp@localhost>
>Release: NetBSD 4.99.57
x86 pmap_update assumes that it's called on the same cpu on which
pmap_kenter_pa etc is called. however,
- there are code which can sleep before calling pmap_update.
- it isn't safe with (future) in-kernel preemption.
do the pmap_update equivalent when switching lwps?
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