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Load a very simple ELF and launch it in usermode

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This commit is contained in:
Jeremy Soller 2016-09-07 21:16:30 -06:00
commit 850792bbf1
1 changed files with 196 additions and 54 deletions
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2
arch/x86_64/src/paging/table.rs
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@ -66,7 +66,7 @@ impl<L> Table<L> where L: HierarchicalLevel {
assert!(!self[index].flags().contains(HUGE_PAGE),
"mapping code does not support huge pages");
let frame = allocate_frame().expect("no frames available");
self[index].set(frame, PRESENT | WRITABLE);
self[index].set(frame, PRESENT | WRITABLE | USER_ACCESSIBLE /* Allow users to go down the page table, implement permissions at the page level */);
self.next_table_mut(index).unwrap().zero();
}
self.next_table_mut(index).unwrap()