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Subject: Re: [PATCH] x86/dumpstack: Walk frames when built with frame pointers
From: "H. Peter Anvin" <hpa@zytor.com>
In-Reply-To: <20140606093541.GN3213@twins.programming.kicks-ass.net>
Date: Fri, 6 Jun 2014 20:08:14 -0700
Cc: Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@kernel.org>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Richard Yao <ryao@gentoo.org>, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, "x86@kernel.org" <x86@kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>, Tejun Heo <tj@kernel.org>,
        Vineet Gupta <vgupta@synopsys.com>,
        Jesper Nilsson <jesper.nilsson@axis.com>, Jiri Slaby <jslaby@suse.cz>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "kernel@gentoo.org" <kernel@gentoo.org>,
        Brian Behlendorf <behlendorf1@llnl.gov>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
        Jiri Olsa <jolsa@redhat.com>
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References: <1398535818-14217-1-git-send-email-ryao@gentoo.org> <20140427120820.GC22116@gmail.com> <20140430215606.GD17745@localhost.localdomain> <20140507164014.GB16034@gmail.com> <20140606081726.GT6758@twins.programming.kicks-ass.net> <20140606082420.GA28241@nazgul.tnic> <20140606093541.GN3213@twins.programming.kicks-ass.net>
To: Peter Zijlstra <peterz@infradead.org>
Sender: linux-kernel-owner@vger.kernel.org

Yes, but now you need a custom adapter.  Some have used a phono plug for the absolute minimum 3 wires.  However, no standards...

Sent from my tablet, pardon any formatting problems.

> On Jun 6, 2014, at 2:35, Peter Zijlstra <peterz@infradead.org> wrote:
> 
>> On Fri, Jun 06, 2014 at 10:24:20AM +0200, Borislav Petkov wrote:
>> Well, with all the other crap they put in modern machines, how hard it
>> is to put a goddam stupid serial line out everywhere...? WTF do I need a
>> goddam adaptive keyboard and other idiotic bling-bling if I can't have a
>> simple serial line for debugging... Blergh.
> 
> This DE-9 is not esthetically pleasing :-) They could of course use a
> different connector, its only 5 wires or so iirc.
> 
> 
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