From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <ak@linux.intel.com>
Subject: Re: Broken dwarf unwinding - wrong stack pointer register value?
Date: Wed, 24 Oct 2018 07:48:18 -0700
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To: Milian Wolff <milian.wolff@kdab.com>
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>, namhyung@kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho <acme@kernel.org>
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> 
> Can someone at least confirm whether unwinding from a function prologue via 
> .eh_frame (but without .debug_frame) should actually be possible?

Yes it should be possible. Asynchronous unwind tables should work
from any instruction.

-Andi