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

[H. Peter Anvin]

On 07/05/2011 10:49 AM, Matthew Garrett wrote:
> 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.
> 

That definitely needs to be fixed.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.