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Set write combining for AP

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This commit is contained in:
Jeremy Soller 2016-09-01 17:08:15 -06:00
parent 7ae58a11d7
commit c74abfc8a7
1 changed files with 3 additions and 3 deletions
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6
arch/x86_64/src/device/display.rs
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@ -108,14 +108,14 @@ pub unsafe fn init(active_table: &mut ActivePageTable) {
fast_set64(onscreen as *mut u64, 0, size/2);
let offscreen = ::allocator::__rust_allocate(size * 4, 8);
let offscreen = ::allocator::__rust_allocate(size * 4, 4096);
fast_set64(offscreen as *mut u64, 0, size/2);
*CONSOLE.lock() = Some(Console::new(width/8, height/16));
*DISPLAY.lock() = Some(Display::new(width, height,
slice::from_raw_parts_mut(onscreen as *mut u32, size),
slice::from_raw_parts_mut(offscreen as *mut u32, size)
));
*CONSOLE.lock() = Some(Console::new(width/8, height/16));
}
}
@ -133,7 +133,7 @@ pub unsafe fn init_ap(active_table: &mut ActivePageTable) {
let start_frame = Frame::containing_address(PhysicalAddress::new(start));
let end_frame = Frame::containing_address(PhysicalAddress::new(start + size * 4 - 1));
for frame in Frame::range_inclusive(start_frame, end_frame) {
active_table.identity_map(frame, entry::PRESENT | entry::WRITABLE | entry::NO_EXECUTE);
active_table.identity_map(frame, /*actually sets PAT for write combining*/ entry::HUGE_PAGE | entry::PRESENT | entry::WRITABLE | entry::NO_EXECUTE);
}
}
}