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Zero and recursive map inactive table on creation

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Philipp Oppermann
2015-12-31 02:03:04 +01:00
parent 7ce86b3a80
commit 716e3f7359
1 changed files with 12 additions and 2 deletions
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14
src/memory/paging/mod.rs
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@@ -10,6 +10,7 @@
pub use self::entry::*; pub use self::entry::*;
use memory::{PAGE_SIZE, Frame, FrameAllocator}; use memory::{PAGE_SIZE, Frame, FrameAllocator};
use self::table::{Table, Level4}; use self::table::{Table, Level4};
use self::temporary_page::TemporaryPage;
use core::ptr::Unique; use core::ptr::Unique;
mod entry; mod entry;
@@ -161,8 +162,17 @@ pub struct InactivePageTable {
} }
impl InactivePageTable { impl InactivePageTable {
pub fn new(frame: Frame) -> InactivePageTable { pub fn new(frame: Frame,
// TODO zero and recursive map the frame active_table: &mut ActivePageTable,
temporary_page: &mut TemporaryPage)
-> InactivePageTable {
{
let table = temporary_page.map_table_frame(frame.clone(), active_table);
table.zero();
table[511].set(frame.clone(), PRESENT | WRITABLE);
}
temporary_page.unmap(active_table);
InactivePageTable { p4_frame: frame } InactivePageTable { p4_frame: frame }
} }
} }