Christoph Egger wrote:
> On Wed, 4 Jul 2001, Brian S. Julin wrote:
>
>
>>On Wed, 4 Jul 2001, Christoph Egger wrote:
>>
>>>What is the usual way to access physical ram instead of virtual ram?
>>>How can I convert addresses between physical and virtual ram?
>>>
>>Same way/addresses you do virtual RAM. With physical RAM, you would
>>have to have a way to get non-swappable pages from the kernel.
>>
>
> OK. Is this fact Linux specific or is it OS independent?
there is no notion of 'physical memory' outside the kernel, at least
not in anything remotely related to Unix.
Why would you care about that anyway ? Whenever you do, you better
put that stuff into a driver.
I thought the new linux console would allow some control over that,
i.e. would do the mapping from kernel space to user space of video
related resources in a secure but flexible way...
Regards,
Stefan
