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Date:   Wed, 23 May 2018 15:09:50 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Alexey Budankov <alexey.budankov@linux.intel.com>
Cc:     Ingo Molnar <mingo@kernel.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Andi Kleen <ak@linux.intel.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        linux-perf-users@vger.kernel.org, Andy Lutomirski <luto@kernel.org>
Subject: Re: [PATCH v2]: perf/x86: store user space frame-pointer value on a
 sample
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On Wed, May 23, 2018 at 01:06:58PM +0300, Alexey Budankov wrote:

> Is the patch ready to be up streamed now? 

Please post a new one where you modify the comment about the syscalls
not saving registers and ideally find the commit that made it so.

Also; I think Andy would appreciate a comment near the syscall code that
refers back to this code and states what registers we rely upon being
there (+BP for this patch).