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Kernel: Convert Processor::in_irq() to static current_in_irq()

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This closes the race window between Processor::current() and a context
switch happening before in_irq().
This commit is contained in:
Andreas Kling
2021-08-22 12:21:31 +02:00
parent 3e3f760808
commit d60635cb9d
14 changed files with 37 additions and 39 deletions
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4
Kernel/Memory/MemoryManager.cpp
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@@ -685,9 +685,9 @@ Region* MemoryManager::find_region_from_vaddr(VirtualAddress vaddr)
PageFaultResponse MemoryManager::handle_page_fault(PageFault const& fault)
{
VERIFY_INTERRUPTS_DISABLED();
if (Processor::current().in_irq()) {
if (Processor::current_in_irq()) {
dbgln("CPU[{}] BUG! Page fault while handling IRQ! code={}, vaddr={}, irq level: {}",
Processor::id(), fault.code(), fault.vaddr(), Processor::current().in_irq());
Processor::id(), fault.code(), fault.vaddr(), Processor::current_in_irq());
dump_kernel_regions();
return PageFaultResponse::ShouldCrash;
}