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kmem(7)
NAME
  kmem - mapped kernel memory interface

DESCRIPTION
  The kmem character special device provides access to mapped kernel memory.

  Byte addresses in kmem are equivalent to mapped kernel memory addresses.
  References to unmapped or user space addresses will return an error. Write
  accesses to console or PAL memory or to memory protected against writes
  will also return an error.

RESTRICTIONS
  Because memory is read and written in aligned quadwords (eight contiguous
  bytes), writing fewer than all the bytes in an aligned quadword is a read-
  modify-write operation that is not protected against writes to the same
  quadword.

  Device registers are accessed as aligned quadwords through kmem.

  The kmem file is not available as a memory mapped file.

FILES
  /dev/kmem

RELATED INFORMATION
  mem(7)