linux-kernel - Re: PEBS level 2/3 breaks dwarf unwinding! [WAS: Re: Broken dwarf unwinding

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Message-ID: <20181106202411.GU6218@tassilo.jf.intel.com>
Date:   Tue, 6 Nov 2018 12:24:11 -0800
From:   Andi Kleen <ak@...ux.intel.com>
To:     Milian Wolff <milian.wolff@...b.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org,
        Jiri Olsa <jolsa@...nel.org>, namhyung@...nel.org,
        linux-perf-users@...r.kernel.org,
        Arnaldo Carvalho <acme@...nel.org>
Subject: Re: PEBS level 2/3 breaks dwarf unwinding! [WAS: Re: Broken dwarf
 unwinding - wrong stack pointer register value?]

> Where would I look for the source to change here? So far, I only concentrated 
> on the userspace side of perf in tools/perf.

Kind of similar to 

a405bad5ad20 perf/x86: Add Haswell specific transaction flag reporting
fdfbbd07e91f perf: Add generic transaction flags

Report the original (not overwritten) regs->ip and regs->sp

-Andi