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Refactor big allocation tracker to use Tag
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This commit is contained in:
Aiken Harris
2026-03-23 12:38:31 +01:00
parent b97babb2bf
commit 597628a644
2 changed files with 9 additions and 8 deletions
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7
sdk/xtdk/mmtypes.h
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@@ -33,8 +33,9 @@
#define MM_POOL_INVALID_ALLOC_RUNLEVEL 8 #define MM_POOL_INVALID_ALLOC_RUNLEVEL 8
#define MM_POOL_INVALID_FREE_RUNLEVEL 9 #define MM_POOL_INVALID_FREE_RUNLEVEL 9
/* Big allocations entry flags */ /* Pool flags */
#define MM_POOL_BIG_ALLOCATIONS_ENTRY_FREE 0x1 #define MM_POOL_BIG_ALLOCATIONS_ENTRY_FREE 0x1
#define MM_POOL_RAISE_EXCEPTION 0x10
/* Number of reserved zeroed PTEs */ /* Number of reserved zeroed PTEs */
#define MM_RESERVED_ZERO_PTES 32 #define MM_RESERVED_ZERO_PTES 32
@@ -225,10 +226,10 @@ typedef struct _POOL_HEADER
/* Pool descriptor structure definition */ /* Pool descriptor structure definition */
typedef struct _POOL_TRACKER_BIG_ALLOCATIONS typedef struct _POOL_TRACKER_BIG_ALLOCATIONS
{ {
PVOID VirtualAddress;
ULONG Key;
ULONG NumberOfPages; ULONG NumberOfPages;
PVOID QuotaObject; PVOID QuotaObject;
ULONG Tag;
PVOID VirtualAddress;
} POOL_TRACKER_BIG_ALLOCATIONS, *PPOOL_TRACKER_BIG_ALLOCATIONS; } POOL_TRACKER_BIG_ALLOCATIONS, *PPOOL_TRACKER_BIG_ALLOCATIONS;
#endif /* __XTDK_MMTYPES_H */ #endif /* __XTDK_MMTYPES_H */

10
xtoskrnl/mm/alloc.cc
View File

@@ -1282,8 +1282,8 @@ MM::Allocator::InitializeBigAllocationsTable(VOID)
* @param VirtualAddress * @param VirtualAddress
* Supplies the virtual address of the big allocation. * Supplies the virtual address of the big allocation.
* *
* @param Key * @param Tag
* Supplies the key used to identify the allocation. * Supplies the tag used to identify the allocation.
* *
* @param NumberOfPages * @param NumberOfPages
* Supplies the number of physical pages backing the allocation. * Supplies the number of physical pages backing the allocation.
@@ -1298,7 +1298,7 @@ MM::Allocator::InitializeBigAllocationsTable(VOID)
BOOLEAN BOOLEAN
XTAPI XTAPI
MM::Allocator::RegisterBigAllocationTag(IN PVOID VirtualAddress, MM::Allocator::RegisterBigAllocationTag(IN PVOID VirtualAddress,
IN ULONG Key, IN ULONG Tag,
IN ULONG NumberOfPages, IN ULONG NumberOfPages,
IN MMPOOL_TYPE PoolType) IN MMPOOL_TYPE PoolType)
{ {
@@ -1336,8 +1336,8 @@ MM::Allocator::RegisterBigAllocationTag(IN PVOID VirtualAddress,
if((ULONG_PTR)Entry->VirtualAddress & MM_POOL_BIG_ALLOCATIONS_ENTRY_FREE) if((ULONG_PTR)Entry->VirtualAddress & MM_POOL_BIG_ALLOCATIONS_ENTRY_FREE)
{ {
/* Populate the available bucket with the allocation metadata */ /* Populate the available bucket with the allocation metadata */
Entry->Key = Key;
Entry->NumberOfPages = NumberOfPages; Entry->NumberOfPages = NumberOfPages;
Entry->Tag = Tag;
Entry->VirtualAddress = VirtualAddress; Entry->VirtualAddress = VirtualAddress;
/* Increment the global usage counter */ /* Increment the global usage counter */
@@ -1455,7 +1455,7 @@ MM::Allocator::UnregisterBigAllocationTag(IN PVOID VirtualAddress,
{ {
/* Capture the allocation metadata */ /* Capture the allocation metadata */
*NumberOfPages = Entry->NumberOfPages; *NumberOfPages = Entry->NumberOfPages;
PoolTag = Entry->Key; PoolTag = Entry->Tag;
/* Invalidate the entry */ /* Invalidate the entry */
Entry->VirtualAddress = (PVOID)MM_POOL_BIG_ALLOCATIONS_ENTRY_FREE; Entry->VirtualAddress = (PVOID)MM_POOL_BIG_ALLOCATIONS_ENTRY_FREE;