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Kernel: Store a pointer to the owner process in PageDirectory

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This replaces the previous owning address space pointer. This commit
should not change any of the existing functionality, but it lays down
the groundwork needed to let us properly access the region table under
the address space spinlock during page fault handling.
This commit is contained in:
Idan Horowitz 2023-04-04 21:06:14 +03:00
commit 003989e1b0
Notes: sideshowbarker 2024-07-16 21:51:43 +09:00
9 changed files with 33 additions and 32 deletions
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7
Kernel/Memory/MemoryManager.cpp
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@ -722,8 +722,11 @@ Region* MemoryManager::find_region_from_vaddr(VirtualAddress vaddr)
auto page_directory = PageDirectory::find_current();
if (!page_directory)
return nullptr;
VERIFY(page_directory->address_space());
return find_user_region_from_vaddr(*page_directory->address_space(), vaddr);
auto* process = page_directory->process();
VERIFY(process);
return process->address_space().with([&](auto& space) {
return find_user_region_from_vaddr(*space, vaddr);
});
}
PageFaultResponse MemoryManager::handle_page_fault(PageFault const& fault)