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Rework guest memory tracking/virtual address space/direct and flexible memory (#135)

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* Rework guest memory tracking

* add unknwon flag

* Fix macOS guest address-space reservation
This commit is contained in:
nmzik
2026-07-31 03:07:17 +02:00
committed by GitHub
parent ecb48f90bb
commit 2f5396c6a5
28 changed files with 3155 additions and 2887 deletions
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src/kernel/memory.h
+23 -10
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@@ -145,7 +145,7 @@ int KYTY_SYSV_ABI KernelIsStack(void* addr, void** start, void** end);
int KYTY_SYSV_ABI KernelReserveVirtualRange(void** addr, size_t len, int flags, size_t alignment);
bool KernelHandleReservedRangeAccessViolation(uint64_t vaddr);
int KYTY_SYSV_ABI KernelAvailableFlexibleMemorySize(size_t* size);
int KYTY_SYSV_ABI KernelConfiguredFlexibleMemorySize(uint64_t* size);
int KYTY_SYSV_ABI KernelConfiguredFlexibleMemorySize(size_t* size);
int KYTY_SYSV_ABI KernelMprotect(const void* addr, size_t len, int prot);
int KYTY_SYSV_ABI KernelMtypeprotect(const void* addr, size_t len, int type, int prot);
int KYTY_SYSV_ABI KernelBatchMap(KernelBatchMapEntry* entries, int num_entries,
@@ -163,17 +163,30 @@ int KYTY_SYSV_ABI KernelMemoryPoolBatch(const KernelMemoryPoolBatchEntry* entrie
int KYTY_SYSV_ABI KernelMemoryPoolGetBlockStats(KernelMemoryPoolBlockStats* output,
size_t output_size);
void RegisterProgramMemory(uint64_t vaddr, uint64_t size, Common::VirtualMemory::Mode mode,
const char* name);
void UpdateProgramMemoryProtection(uint64_t vaddr, uint64_t size, Common::VirtualMemory::Mode mode);
void UnregisterProgramMemory(uint64_t vaddr, uint64_t size);
uint64_t AllocateProgramMemory(uint64_t search_addr, uint64_t size,
Common::VirtualMemory::Mode mode, const char* name);
void SetProgramMemoryProtection(uint64_t vaddr, uint64_t size, Common::VirtualMemory::Mode mode);
uint64_t AllocateRuntimeMemory(uint64_t search_addr, uint64_t size,
Common::VirtualMemory::Mode mode, const char* name,
bool fixed = false);
uint64_t AllocateGuestStackMemory(uint64_t search_addr, uint64_t size,
Common::VirtualMemory::Mode mode, const char* name);
bool ProtectGuestMemory(uint64_t vaddr, uint64_t size, Common::VirtualMemory::Mode mode,
Common::VirtualMemory::Mode* old_mode = nullptr);
// Transient PageManager watch state; does not change the guest mapping's semantic protection.
bool ProtectGuestHostMemory(uint64_t vaddr, uint64_t size, Common::VirtualMemory::Mode mode);
bool FreeGuestMemory(uint64_t vaddr, uint64_t size);
#if defined(KYTY_VIRTUAL_MEMORY_ALLOCATION_TESTS)
void TestFailNextPhysicalMemoryUnmap();
void TestFailPhysicalMemoryUnmapAfter(uint32_t successful_unmaps);
void TestFailHostReservationAfter(uint32_t successful_pages);
void TestFailNextFixedReserveRangeRegistration();
bool TestPlaceholderRangeIsFree(uint64_t vaddr, uint64_t size);
void TestFailNextPhysicalMemoryUnmap();
void TestFailPhysicalMemoryUnmapAfter(uint32_t successful_unmaps);
void TestFailGuestBackingStoreUnmapAfter(uint32_t successful_unmaps);
void TestFailNextFixedReserveRangeRegistration();
bool TestPlaceholderRangeIsFree(uint64_t vaddr, uint64_t size);
bool TestGuestAddressRangeIsOwned(uint64_t vaddr, uint64_t size);
bool TestGuestBackingOutsideAddressSpace();
uint64_t TestGuestBackingSize();
bool TestGuestFreeRangeBounds();
#endif
} // namespace Libs::LibKernel::Memory