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Higher-half kernel mapping. Unmap where possible, freeing up lower memory

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This commit is contained in:
Jeremy Soller 2016-09-14 20:47:55 -06:00
parent 6e16298e71
commit 83bc8a0da5
7 changed files with 68 additions and 30 deletions
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6
arch/x86_64/src/device/display.rs
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@ -3,7 +3,7 @@ use ransid::{Console, Event};
use spin::Mutex;
use memory::Frame;
use paging::{ActivePageTable, PhysicalAddress, entry};
use paging::{ActivePageTable, Page, PhysicalAddress, VirtualAddress, entry};
#[cfg(target_arch = "x86_64")]
#[allow(unused_assignments)]
@ -117,6 +117,8 @@ pub unsafe fn init(active_table: &mut ActivePageTable) {
));
*CONSOLE.lock() = Some(Console::new(width/8, height/16));
}
active_table.unmap(Page::containing_address(VirtualAddress::new(0x5200)));
}
pub unsafe fn init_ap(active_table: &mut ActivePageTable) {
@ -137,6 +139,8 @@ pub unsafe fn init_ap(active_table: &mut ActivePageTable) {
}
}
}
active_table.unmap(Page::containing_address(VirtualAddress::new(0x5200)));
}
/// A display