Re: [linux-pm] [RFC] userland swsusp

From: Alan Cox
Date: Fri Nov 18 2005 - 16:35:26 EST

On Gwe, 2005-11-18 at 22:23 +0100, Arjan van de Ven wrote:
> 1) accessing non-ram memory (eg PCI mmio space) by X and the likes
> (ideally should use sysfs but hey, changing X for this will take
> forever)

Once sysfs supports the relevant capabilities fixing X actually doesn't
look too horrible, the PCI mapping routines are abstracted and done by
PCITAG (ie PCI device). You would need the ISA hole too in some cases.

> 2) accessing bios memory in the lower 1Gb for various emulation like
> purposes (including vbetool and X mode setting)
> 3) accessing things the kernel sees as RAM
> they are very distinct security wise.


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