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Date: Fri, 1 Nov 2024 14:09:08 -0500
From: Segher Boessenkool <segher@kernel.crashing.org>
To: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>, x86@kernel.org,
        Peter Zijlstra <peterz@infradead.org>,
        Steven Rostedt <rostedt@goodmis.org>, Ingo Molnar <mingo@kernel.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        linux-kernel@vger.kernel.org, Indu Bhagat <indu.bhagat@oracle.com>,
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        Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
        Ian Rogers <irogers@google.com>,
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        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Florian Weimer <fweimer@redhat.com>, Andy Lutomirski <luto@kernel.org>
Subject: Re: [PATCH v3 09/19] unwind: Introduce sframe user space unwinding
Message-ID: <20241101190908.GV29862@gate.crashing.org>
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On Thu, Oct 31, 2024 at 04:03:13PM -0700, Josh Poimboeuf wrote:
> Personally I find the idea of a single 4GB+ text segment pretty
> surprising as I've never seen anything even close to that.

It is pretty common I'm afraid.

> Actually I just double checked and even the kernel's ELF loader assumes
> that each executable has only a single text start+end address pair.

Huh?  What makes you think that?  There can be many executable PT_LOAD
segments in each and every binary.


Segher