linux-kernel - Re: [PATCH 1/2] perf cs-etm: Support sample flags 'insn' and 'insnlen'

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 19 Aug 2019 15:50:54 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>
Cc:     Leo Yan <leo.yan@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Mike Leach <mike.leach@...aro.org>,
        Robert Walker <robert.walker@....com>,
        Coresight ML <coresight@...ts.linaro.org>
Subject: Re: [PATCH 1/2] perf cs-etm: Support sample flags 'insn' and
 'insnlen'

Em Mon, Aug 19, 2019 at 12:08:26PM -0600, Mathieu Poirier escreveu:
> On Thu, 15 Aug 2019 at 02:30, Leo Yan <leo.yan@...aro.org> wrote:
> >
> > The synthetic branch and instruction samples are missed to set
> > instruction related info, thus perf tool fails to display samples with
> > flags '-F,+insn,+insnlen'.
> >
> > CoreSight trace decoder has provided sufficient information to decide
> > the instruction size based on the isa type: A64/A32 instruction are
> > 32-bit size, but one exception is the T32 instruction size, which might
> > be 32-bit or 16-bit.
> >
> > This patch handles for these cases and it reads the instruction values
> > from DSO file; thus can support flags '-F,+insn,+insnlen'.
 
> The code seems to be correct.  I have also tested this patch.
 
> Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>

Thanks, applied.

- Arnaldo