[PATCH 00/10] Enhance /dev/mem to allow read/write of arbitrary physical addresses

[Matthew Garrett]

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 at srcf.ucam.org