- Implement ARM3 page fault handling.
- Paged pool PTEs are demand zero PTEs while the memory hasn't been accessed -- this is the only type of fault supported.
- Because paged pool PDEs are also demand-paged, added code to handle demand paging of PDEs as well.
- Also, because paged pool is non-resident, but can be accessed from any process, we need a mechanism to sync up the kernel's page directory with the per-process one, on demand. This is done at startup, but other processes may have paged in paged pool that another process knows nothing about when he faults.
- Similar to the hack ReactOS Mm uses, but done properly.
- This is what that shadow system page directory is finally being used for.
- Assert if we get a user-mode fault, a transition fault, or a soft fault, since these shouldn't happen.
- Disable APCs while dispatching faults, and pseudo-use the working set lock.
- Assert if we get write errors on read-only pages, since we don't use those in ARM3 yet.
- Assert if we have a paged out PTE, this shouldn't happen yet.
- Enable test to see if we can touch a paged pool allocation.
svn path=/trunk/; revision=43507