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Kernel: Implement copy-on-write memory for file backed mmaps

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Bananymous
2024-09-11 19:32:42 +03:00
parent 4006a04817
commit c77ad5fb34
15 changed files with 217 additions and 208 deletions
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10
kernel/kernel/IDT.cpp
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@@ -200,13 +200,13 @@ namespace Kernel
goto done;
}
// Try demand paging on non present pages
PageFaultError page_fault_error;
page_fault_error.raw = error;
if (pid && !page_fault_error.present)
if (pid)
{
PageFaultError page_fault_error;
page_fault_error.raw = error;
Processor::set_interrupt_state(InterruptState::Enabled);
auto result = Process::current().allocate_page_for_demand_paging(regs->cr2);
auto result = Process::current().allocate_page_for_demand_paging(regs->cr2, page_fault_error.write);
Processor::set_interrupt_state(InterruptState::Disabled);
if (!result.is_error() && result.value())