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

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Message-Id: <20180423095601.19d5d833f0260cede4b4c093@arm.com>
Date:   Mon, 23 Apr 2018 09:56:01 -0500
From:   Kim Phillips <kim.phillips@....com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Namhyung Kim <namhyung@...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 Mon, 23 Apr 2018 10:52:21 -0300
Arnaldo Carvalho de Melo <acme@...nel.org> wrote:

> Em Fri, Apr 20, 2018 at 06:23:58PM -0500, Kim Phillips escreveu:
> > 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>
> 
> So as you actually seem to have tested this, I'm taking this as a
> Tested-by instead, to better reflect what you did, ok?

Sure.

Thanks,

Kim