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ALTMEM(4)                    Device Drivers Manual                   ALTMEM(4)

NAME
     altmem - Alternative memory disk driver

SYNOPSIS
     altmem* at altmemdev?

DESCRIPTION
     The altmem driver enables use of physical memory that is normally
     inaccessible by the machine-dependent pmap(9) as a swap device.

     When an alternative memory disk device is present, this device is
     generally preferred to hard disk-based swap space.  See the swapctl(8)
     and fstab(5) man pages for instructions on how to assign priorities to
     swap devices.

FILES
     /dev/altmem??   block mode alternative memory disk devices.
     /dev/raltmem??  raw mode alternative memory disk devices.

SEE ALSO
     md(4), fstab(5), swapctl(8)

HISTORY
     The altmem device driver appeared in NetBSD 6.0.

AUTHORS
     Jared D. McNeill <jmcneill@NetBSD.org>

NetBSD 10.99                    March 11, 2009                    NetBSD 10.99