Date: Thu, 25 Apr 2013 19:06:35 +0200
From: Oleg Nesterov <oleg@redhat.com>
To: Jacob Shin <jacob.shin@amd.com>
Cc: Will Deacon <will.deacon@arm.com>, Ingo Molnar <mingo@redhat.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
        "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>,
        "x86@kernel.org" <x86@kernel.org>,
        Stephane Eranian <eranian@google.com>, Jiri Olsa <jolsa@redhat.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH V2 1/4] perf: Add hardware breakpoint address mask
Message-ID: <20130425170635.GA1324@redhat.com>
References: <1366703825-19373-1-git-send-email-jacob.shin@amd.com> <1366703825-19373-2-git-send-email-jacob.shin@amd.com> <20130423095437.GD17593@mudshark.cambridge.arm.com> <20130423143423.GB17021@jshin-Toonie> <20130423144057.GA19644@jshin-Toonie> <20130423150240.GD18616@mudshark.cambridge.arm.com> <20130423151846.GA22052@jshin-Toonie> <20130424094853.GB21850@mudshark.cambridge.arm.com> <20130424163038.GA29816@jshin-Toonie>
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On 04/24, Jacob Shin wrote:
>
> And only x86
> hw_breakpoint will know what .config = 0xf means for x86 and do the right
> thing. For ARM, 0xf will mean something different.
>
> The downside is that in userland perf tool we need differing documentation
> on what the mask syntax means for each architecture.

Personally I think this is acceptable.

But I am new to this code, so...

Oleg.

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