ALTMEM(4) Kernel Interfaces Manual ALTMEM(4)
NAME
altmemAlternative 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
HISTORY
The altmem device driver appeared in NetBSD 6.0.
AUTHORS
Jared D. McNeill <jmcneill@NetBSD.org>