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workaround for crash on graphical debug finish

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This commit is contained in:
Jeremy Soller
2022-01-28 09:47:47 -07:00
parent 3f2a9f7f0a
commit bbc4a4aefe
1 changed files with 6 additions and 4 deletions
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10
src/arch/x86_64/graphical_debug/mod.rs
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@@ -62,14 +62,16 @@ pub fn init(active_table: &mut ActivePageTable) {
}
pub fn fini(active_table: &mut ActivePageTable) {
if let Some(debug_display) = DEBUG_DISPLAY.lock().take() {
let debug_display_opt = DEBUG_DISPLAY.lock().take();
if let Some(debug_display) = debug_display_opt {
let display = debug_display.into_display();
let onscreen = display.onscreen.as_mut_ptr() as usize;
let size = display.width * display.height;
{
let size = display.onscreen.len() * 4;
//TODO: fix crash if we unmap this memory
if false {
let flush_all = PageFlushAll::new();
let start_page = Page::containing_address(VirtualAddress::new(onscreen));
let end_page = Page::containing_address(VirtualAddress::new(onscreen + size * 4));
let end_page = Page::containing_address(VirtualAddress::new(onscreen + size));
for page in Page::range_inclusive(start_page, end_page) {
let (result, _frame) = active_table.unmap_return(page, false);
flush_all.consume(result);