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Kernel/x86: Re-enable interrupts ASAP when handling page faults

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As soon as we've saved CR2 (the faulting address), we can re-enable
interrupt processing. This should make the kernel more responsive under
heavy fault loads.
This commit is contained in:
Andreas Kling 2022-08-19 12:14:46 +02:00
parent 037f1ae979
commit a84d893af8
4 changed files with 5 additions and 7 deletions
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6
Kernel/Arch/x86/common/Interrupts.cpp
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@ -254,8 +254,12 @@ void page_fault_handler(TrapFrame* trap)
{
clac();
auto& regs = *trap->regs;
// NOTE: Once we've extracted the faulting address from CR2,
// we can re-enable interrupts.
auto fault_address = read_cr2();
sti();
auto& regs = *trap->regs;
if constexpr (PAGE_FAULT_DEBUG) {
u32 fault_page_directory = read_cr3();