"Matt Thomas" <m...@netbsd.org> 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). -- Mindaugas
