title: Find the prototypes of some Windows Kernel APIs like NtAllocateUserPhysicalPagesEx
body: <p>I can't find the prototypes of some modern Windows kernel APIs and a structure. I am pretty sure these functions are defined in ntdll.dll because they can be seen in the export tables of it, but I can't see any documents for them. Even there are no any information in winsdk-10/ntifs.h.
  Here are the list of missing functions and a structure that I am looking for.</p>
  <p><strong>Functions:</strong></p>
  <p><em>NtPssCaptureVaSpaceBulk, NtAllocateUserPhysicalPagesEx, NtAcquireCrossVmMutant, NtCreateCrossVmMutant, NtDirectGraphicsCall, NtWriteErrorLogEntry, NtCreateWinStation, NtOpenWinStation, NtSetWinStationInformation, NtQueryWinStationInformation</em></p>
  <p><strong>Structure:</strong></p>
  <p><em>CHANNEL_MESSAGE</em></p>
  <p>If you have any information for them, help me to share them kindly. Thank you.</p>