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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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3
Kernel/Memory/Region.cpp
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@@ -402,7 +402,6 @@ PageFaultResponse Region::handle_fault(PageFault const& fault)
PageFaultResponse Region::handle_zero_fault(size_t page_index_in_region)
{
VERIFY_INTERRUPTS_DISABLED();
VERIFY(vmobject().is_anonymous());
SpinlockLocker locker(vmobject().m_lock);
@@ -444,7 +443,6 @@ PageFaultResponse Region::handle_zero_fault(size_t page_index_in_region)
PageFaultResponse Region::handle_cow_fault(size_t page_index_in_region)
{
VERIFY_INTERRUPTS_DISABLED();
auto current_thread = Thread::current();
if (current_thread)
current_thread->did_cow_fault();
@@ -461,7 +459,6 @@ PageFaultResponse Region::handle_cow_fault(size_t page_index_in_region)
PageFaultResponse Region::handle_inode_fault(size_t page_index_in_region)
{
VERIFY_INTERRUPTS_DISABLED();
VERIFY(vmobject().is_inode());
VERIFY(!s_mm_lock.is_locked_by_current_processor());
VERIFY(!g_scheduler_lock.is_locked_by_current_processor());