Re: [RFC] prevent "dd if=/dev/mem" crash

From: William Lee Irwin III <>
Date: 2003-10-18 10:15:11
On Fri, Oct 17, 2003 at 04:55:43PM -0700, Andrew Morton wrote:
> This code was conceived before my time and I don't recall seeing much
> discussion, so this is all guesswork..
> I'd say that the high_memory test _is_ superfluous and that if anyone
> cared, we would remove it and establish a temporary pte against the address if
> it was outside the direct-mapped area.  But nobody cares enough to have
> done anything about it.

I've heard crash dump people mention it and am trying to convince them
to post their fix(es) here. =)

-- wli
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Received on Fri Oct 17 20:12:29 2003

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