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Date: Wed, 20 Jan 2010 13:55:46 +0100 From: Pavel Machek <pavel@....cz> To: Peter Zijlstra <peterz@...radead.org> Cc: Avi Kivity <avi@...hat.com>, ananth@...ibm.com, Jim Keniston <jkenisto@...ibm.com>, Srikar Dronamraju <srikar@...ux.vnet.ibm.com>, Ingo Molnar <mingo@...e.hu>, Arnaldo Carvalho de Melo <acme@...radead.org>, utrace-devel <utrace-devel@...hat.com>, Frederic Weisbecker <fweisbec@...il.com>, Masami Hiramatsu <mhiramat@...hat.com>, Maneesh Soni <maneesh@...ibm.com>, Mark Wielaard <mjw@...hat.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [RFC] [PATCH 1/7] User Space Breakpoint Assistance Layer (UBP) On Sun 2010-01-17 16:01:46, Peter Zijlstra wrote: > On Sun, 2010-01-17 at 16:56 +0200, Avi Kivity wrote: > > On 01/17/2010 04:52 PM, Peter Zijlstra wrote: > > > > Also, if its fixed size you're imposing artificial limits on the number > > > of possible probes. > > > > > > > Obviously we'll need a limit, a uprobe will also take kernel memory, we > > can't allow people to exhaust it. > > Only if its unprivilidged, kernel and root should be able to place as > many probes until the machine keels over. Well, it is address space that limits you in both cases... -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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