linux-kernel - Re: [PATCH] perf tools: set kernel end address properly

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Message-Id: <20180420182358.c3dad0f06100d41aa16a2104@arm.com>
Date:   Fri, 20 Apr 2018 18:23:58 -0500
From:   Kim Phillips <kim.phillips@....com>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>, Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Jiri Olsa <jolsa@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, <kernel-team@....com>
Subject: Re: [PATCH] perf tools: set kernel end address properly

On Fri, 20 Apr 2018 08:59:15 +0900
Namhyung Kim <namhyung@...nel.org> wrote:

> The map_groups__fixup_end() was called to set end addresses of kernel
> map and module maps.  But now machine__create_modules() is set the end
> address of modules properly, the only remaining piece is the kernel map.
> We can set it with adjacent module's address directly instead of calling
> the map_groups__fixup_end().  If there's no module after the kernel map,
> the end address will be ~0ULL.
> 
> Since it also changes the start address of the kernel map, it needs to
> re-insert the map to the kmaps in order to keep a correct ordering.  Kim
> reported that it caused problems on ARM64.
> 
> Reported-by: Kim Phillips <kim.phillips@....com>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---

Acked-by: Kim Phillips <kim.phillips@....com>

Thanks,

Kim