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NAME    [Toc]    [Back]

       kmem - mapped kernel memory interface

DESCRIPTION    [Toc]    [Back]

       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    [Toc]    [Back]

       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

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

FILES    [Toc]    [Back]


SEE ALSO    [Toc]    [Back]


[ Back ]
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Name OS Title
msync HP-UX synchronize the memory of a mapped file with physical storage
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msem_init Tru64 Initialize a semaphore in a mapped file or shared memory region
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alwaysdump HP-UX defines which classes of kernel memory pages are dumped when a kernel panic occurs
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