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Re: CVS commit: src/sys/uvm
"Matt Thomas" <matt%netbsd.org@localhost> wrote:
> Module Name: src
> Committed By: matt
> Date: Mon Sep 3 19:53:43 UTC 2012
> Modified Files:
> src/sys/uvm: uvm_km.c uvm_map.c
> Log Message:
> Switch to a spin lock (uvm_kentry_lock) which, fortunately, was sitting
> there unused.
- pmap_growkernel() may use adaptive locks, which cannot be acquired with
the spin lock held; so the change breaks at least x86 and alpha.
- Why in the caller? I think it would be better do leave it for the pmaps,
e.g. they may re-use the locks which already provide the necessary
protection and which need to be taken anyway (like in x86 pmap).
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