Re: mapping pages into new address spaces

Hi Josh,

> Here's the only solution I can see: start the new thread executing on
> a page that I *know* is unmapped, let it page fault on the first
> instruction, and then map the page on demand.  Is this the right way
> to do it?  Am I thinking about this in the right way?

Yes, you're right (except that I don't understand why you want a page of
which you know that it's not mapped, in a newly created address space,
this should be the case for every (user) page, I think).
Once the new thread's state is set to active, it waits for a startup IPC
from its pager. This IPC contains IP and SP for the thread. Upon receiving
the IPC, the thread will start running at the specified IP and raise a
page fault. The pager can now reply with the needed page.

-Philipp