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Kernel: Change Region allocation helpers
We now can create a cacheable Region, so when map() is called, if a Region is cacheable then all the virtual memory space being allocated to it will be marked as not cache disabled. In addition to that, OS components can create a Region that will be mapped to a specific physical address by using the appropriate helper method.
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7 changed files with 77 additions and 56 deletions
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@ -62,9 +62,10 @@ public:
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void map_for_kernel(VirtualAddress, PhysicalAddress, bool cache_disabled = false);
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OwnPtr<Region> allocate_kernel_region(size_t, const StringView& name, u8 access, bool user_accessible = false, bool should_commit = true);
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OwnPtr<Region> allocate_kernel_region_with_vmobject(VMObject&, size_t, const StringView& name, u8 access);
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OwnPtr<Region> allocate_user_accessible_kernel_region(size_t, const StringView& name, u8 access);
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OwnPtr<Region> allocate_kernel_region(size_t, const StringView& name, u8 access, bool user_accessible = false, bool should_commit = true, bool cacheable = true);
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OwnPtr<Region> allocate_kernel_region(PhysicalAddress, size_t, const StringView& name, u8 access, bool user_accessible = false, bool cacheable = false);
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OwnPtr<Region> allocate_kernel_region_with_vmobject(VMObject&, size_t, const StringView& name, u8 access, bool user_accessible = false, bool cacheable = false);
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OwnPtr<Region> allocate_user_accessible_kernel_region(size_t, const StringView& name, u8 access, bool cacheable = false);
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unsigned user_physical_pages() const { return m_user_physical_pages; }
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unsigned user_physical_pages_used() const { return m_user_physical_pages_used; }
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