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Kernel: Allow contiguous allocations in physical memory

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For that, we have a new type of VMObject, called
ContiguousVMObject, that is responsible for allocating contiguous
physical pages.
This commit is contained in:
Liav A 2020-03-07 19:24:41 +02:00 • committed by Andreas Kling
parent b066586355
commit d6e122fd3a
8 changed files with 219 additions and 23 deletions
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2
Kernel/VM/MemoryManager.h
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@ -100,9 +100,11 @@ public:
RefPtr<PhysicalPage> allocate_user_physical_page(ShouldZeroFill = ShouldZeroFill::Yes);
RefPtr<PhysicalPage> allocate_supervisor_physical_page();
Vector<RefPtr<PhysicalPage>> allocate_contiguous_supervisor_physical_pages(size_t size);
void deallocate_user_physical_page(PhysicalPage&&);
void deallocate_supervisor_physical_page(PhysicalPage&&);
OwnPtr<Region> allocate_contiguous_kernel_region(size_t, const StringView& name, u8 access, bool user_accessible = false, bool cacheable = true);
OwnPtr<Region> allocate_kernel_region(size_t, const StringView& name, u8 access, bool user_accessible = false, bool should_commit = true, bool cacheable = true);
OwnPtr<Region> allocate_kernel_region(PhysicalAddress, size_t, const StringView& name, u8 access, bool user_accessible = false, bool cacheable = true);
OwnPtr<Region> allocate_kernel_region_with_vmobject(VMObject&, size_t, const StringView& name, u8 access, bool user_accessible = false, bool cacheable = true);