As part of the support for cache partitioning, POSIX style user/group/other (UGO) access was added to some kernel objects.  That support should be added to all the inter-process visible kernel objects:

  AttachedMemoryObject,
  Event,
  Mailbox,
  MemoryObject,
  Mutex,
  PlatformResource,
  Process,
  Semaphore,

Such access, once added will reduce the number of race conditions required by many applications that currently must both create and grant access to an object before another process can use it.  The idea here would be to, long term, deprecate, or at least suggest the use of UGO rather than specific process access grants.  It is suggested that a system wide registry setting be created that enables the UGO style access control.  For backward compatibility, the existing "grant style" access controls, if granted, would continue to grant access regardless of UGO settings.