typedef struct _PERFINFO_HARDPAGEFAULT_INFORMATION
{
     LARGE_INTEGER ReadOffset;
     PVOID VirtualAddress;
     PVOID FileObject;
     ULONG ThreadId;
     ULONG ByteCount;
} PERFINFO_HARDPAGEFAULT_INFORMATION, *PPERFINFO_HARDPAGEFAULT_INFORMATION;

Windows Vista Kernel Structures