Re: [ros-dev] Re: [ros-svn] [navaraf] 16445: Put the page tables and hyperspace at the right place in memory (ie. Windows compatible).

[Alex Ionescu]

Hartmut Birr wrote:

>  Filip Navara wrote:
>
>   
>
> >Sorry, I was confused by incorrect graph in the Windows Internals, 4th
> >edition book which shows an 8Mb hyperspace region (in fact the high
> >4Mb are unused).
> > 
Yes, that graph is totally wrong and limited...shame for such a good book.

> >   Do you think
> > the attached patch corrects the problem?
> >
> > Regards,
> > Filip
> >     
> >  
> Hi,
>
> your patch does fix the problem. I prefer to use 0xc0800000 - 0xc08fffff
> for the hyperspace region. 
>  
But that's not NT-compatible anymore. First of all that's only 0xFFFFF 
bytes, while the Hyperspace region should be 0x400000 bytes. And 
secondly, the region is marked as reserved.  I agree with Filip to use 
0xc0400000-0xc0800000

>  It removes the test for pae or nonpae mode.
>
> - Hartmut
>
>   
>  
Best regards,
Alex Ionescu