Paging && Multitasking errors

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Hello! Using JamesM's tutorials I'm trying to setup Multitasking. All goes Ok, but when I'm switching to new paging directory:

Code: Select all

...
paging_currentdirectory = paging_clonedirectory(paging_kerneldirectory);	
paging_switchdirectory(paging_currentdirectory);
...

my Os get's crasy and reboots. I have no ideas what I'm doing wrong. Please, help!

[glauxosdever]

Hi,

James Molloy's tutorials are full of bugs. They are not noticed until things explode. Please check http://wiki.osdev.org/James_Molloy%27s_ ... Known_Bugs out for more information.

Regards,
glauxosdever

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Ooops... Does it mean "Rewrite your OS"?

[Kazinsal]

It means JamesM's tutorial is not the bible of Unix development and should be taken with several large grains of salt.

Something tells me your page table's physical addresses are not what they should be. Print debugging is your friend for things like this.