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Date: Sat, 12 Jun 2010 18:38:29 +0200
From: castet.matthieu@free.fr
To: linux-kernel@vger.kernel.org
Cc: Siarhei Liakh <sliakh.lkml@gmail.com>,
       "H. Peter Anvin" <hpa@linux.intel.com>, Ingo Molnar <mingo@elte.hu>
Subject: Re: [tip:x86/mm] x86, mm: Set first MB as RW+NX
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hi,

> Special accommodations have been made for BIOS32/PCI BIOS services:
> according to BIOS32 specification
> (http://members.datafast.net.au/dft0802/specs/bios32.pdf), at most two
> pages per BIOS32 service should be set executable and no pages need to
> be writeable.
>>From my understanding only the service directory take 2 pages.

The no info for the pci service :
- the length field could be used to find the number of page it takes.
- could we assume data ro ?

Also for easier debugging, set_2_pages_rox should print some info.


Matthieu