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Date: Tue, 5 Jul 2011 18:49:01 +0100
From: Matthew Garrett <mjg@redhat.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Petr Tesarik <ptesarik@suse.cz>, "H. Peter Anvin" <hpa@zytor.com>,
        Christoph Hellwig <hch@infradead.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Fenghua Yu <fenghua.yu@intel.com>, Ingo Molnar <mingo@redhat.com>,
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        Dave Jones <davej@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 00/10] Enhance /dev/mem to allow read/write of
 arbitrary physical addresses
Message-ID: <20110705174901.GA30531@srcf.ucam.org>
References: <201106171038.25988.ptesarik@suse.cz>
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On Sun, Jul 03, 2011 at 09:46:18PM +0200, Ingo Molnar wrote:

> But those tables wont be in regular RAM (they will be in ROM or in 
> RAM marked non-RAM in a special way in the e820 tables).
> 
> dmidecode certainly works on Fedora.

I've repeatedly wanted to dump EFI data that's flagged as E820_RESERVED 
above the top of RAM and had to hack the kernel every time. I'm entirely 
in favour of not having to hack the kernel every time.

-- 
Matthew Garrett | mjg59@srcf.ucam.org