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disable forced bluescreen

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This commit is contained in:
Christoph Urlacher
2022-07-04 16:20:46 +02:00
parent 17aee557da
commit 42a1d719ee
1 changed files with 8 additions and 9 deletions
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17
c_os/main.cc
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@ -52,23 +52,22 @@ int main() {
// Activate paging
// This has to happen after the allocator is initialized but before the scheduler is started
// TODO: Scheduler triggers bluescreen?
pg_init();
// Trigger Bluescreen
kout << "Trigger Bluescreen, if you can read this it didn't work" << endl;
// kout << "Trigger Bluescreen, if you can read this it didn't work" << endl;
// BlueScreen 1
// asm("int $3");
// BlueScreen 2
unsigned int* page = pg_alloc_page();
*page = 42;
pg_write_protect_page(page);
invalidate_tlb_entry(page); // If we don't invalidate after first access the write protection
// won't work as no lookup is performed (address in tlb)
*page = 42; // We map logical to physical 1:1 so no need to do any lookup
// If tlb is invalidated this access produces a pagefault
// unsigned int* page = pg_alloc_page();
// *page = 42;
// pg_write_protect_page(page);
// invalidate_tlb_entry(page); // If we don't invalidate after first access the write protection
// // won't work as no lookup is performed (address in tlb)
// *page = 42; // We map logical to physical 1:1 so no need to do any lookup
// // If tlb is invalidated this access produces a pagefault
// Demo threads anlegen
// scheduler.ready(new HelloWorldThread());