linux-kernel - Re: [PATCH v7 11/18] perf tools: add mem access sampling core support

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Message-ID: <1364394014.5053.76.camel@laptop>
Date:	Wed, 27 Mar 2013 15:20:14 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Stephane Eranian <eranian@...gle.com>,
	linux-kernel@...r.kernel.org, mingo@...e.hu, ak@...ux.intel.com,
	acme@...hat.com, namhyung.kim@....com
Subject: Re: [PATCH v7 11/18] perf tools: add mem access sampling core
 support

On Wed, 2013-03-27 at 15:14 +0100, Jiri Olsa wrote:
> we have correct cpumode for sample->ip, but I think it's the
> PEBS->dla (sample->addr) where we need to guess.. right?

kernel mode very much fakes the cpumode/segment stuff for PEBS. PEBS
assumes you're running in a linear/flat mode.

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