Messages in this thread | | | Date | Fri, 18 Apr 2008 10:07:25 +0200 | From | Andi Kleen <> | Subject | Re: [RFC PATCH] x86 NMI-safe INT3 and Page Fault (v5) |
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Mathieu Desnoyers wrote: > * Andi Kleen (andi@firstfloor.org) wrote: >> Mathieu Desnoyers <compudj@krystal.dyndns.org> writes: >>> It allows placing immediate values (and therefore optimized trace_marks) in NMI >>> code >> Only if all your trace_mark infrastructure is lock less. >> >> -Andi >> > > It uses RCU-style updates and has been designed to be lockless from the > ground up.
Wrong. If it causes vmalloc faults it is not lockless.
-Andi
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