Messages in this thread | | | From | KOSAKI Motohiro <> | Subject | Re: KVM bug, git bisected | Date | Tue, 30 Mar 2010 09:34:15 +0900 (JST) |
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> On Mon, 2010-03-29 at 18:29 +0200, Peter Zijlstra wrote: > > > > Peter, would it be safe to increase PREEMPT_BITS to eg. 10? > > One reason this all sucks massive is that nesting that many spinlocks > creates a terribly large !preempt section. > > There is nothing that stops someone from creating 64k vmas (or more when > someone raises that sysctl) and try this, that's just utter suckage.
offtopic: We are plan to increase default maximum vmas limit from 64k at 1 or 2 years later on 64bit. It was necessary because gdb couldn't parse >64k vmas (i.e. mainly it's for core dump). but it was solved already.
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