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Add ept translation hints

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momo5502
2022-04-17 10:19:00 +02:00
parent 77785486ae
commit 30daca5444
7 changed files with 174 additions and 46 deletions
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19
src/driver/ept.hpp
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@ -38,6 +38,16 @@ namespace vmx
ept_hook* next_hook{nullptr};
};
struct ept_translation_hint
{
DECLSPEC_PAGE_ALIGN uint8_t page[PAGE_SIZE]{};
uint64_t physical_base_address{};
const void* virtual_base_address{};
ept_translation_hint* next_hint{nullptr};
};
struct guest_context;
class ept
@ -53,7 +63,7 @@ namespace vmx
void initialize();
void install_hook(const void* destination, const void* source, size_t length);
void install_hook(const void* destination, const void* source, size_t length, ept_translation_hint* translation_hint = nullptr);
void disable_all_hooks() const;
void handle_violation(guest_context& guest_context) const;
@ -62,6 +72,9 @@ namespace vmx
ept_pointer get_ept_pointer() const;
void invalidate() const;
static ept_translation_hint* generate_translation_hints(const void* destination, size_t length);
static void free_translation_hints(ept_translation_hint* hints);
private:
DECLSPEC_PAGE_ALIGN pml4 epml4[EPT_PML4E_ENTRY_COUNT]{};
DECLSPEC_PAGE_ALIGN pml3 epdpt[EPT_PDPTE_ENTRY_COUNT]{};
@ -78,10 +91,10 @@ namespace vmx
ept_hook* allocate_ept_hook();
ept_hook* find_ept_hook(uint64_t physical_address) const;
ept_hook* get_or_create_ept_hook(void* destination);
ept_hook* get_or_create_ept_hook(void* destination, ept_translation_hint* translation_hint = nullptr);
void split_large_page(uint64_t physical_address);
void install_page_hook(void* destination, const void* source, size_t length);
void install_page_hook(void* destination, const void* source, size_t length, ept_translation_hint* translation_hint = nullptr);
};
}