NtMapUserPhysicalPages - NtDoc

#ifndef _NTMMAPI_H
// User physical pages
#if (PHNT_MODE != PHNT_MODE_KERNEL)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtMapUserPhysicalPages(
    _In_ PVOID VirtualAddress,
    _In_ ULONG_PTR NumberOfPages,
    _In_reads_opt_(NumberOfPages) PULONG_PTR UserPfnArray
    );

#endif
#endif
View code on GitHub

#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwMapUserPhysicalPages(
    _In_ PVOID VirtualAddress,
    _In_ ULONG_PTR NumberOfPages,
    _In_reads_opt_(NumberOfPages) PULONG_PTR UserPfnArray
    );

#endif
View code on GitHub