• Magnus Damm's avatar
    [PATCH] documentation for mem= · 9d40aa53
    Magnus Damm authored
    I recently learnt that limiting RAM with by using only "mem=xxxM" is no
    good on machines equipped with PCI.  In my case (vanilla 2.6.9) the cardbus
    bridge on my laptop got mapped to the unused RAM area which resulted in
    wierd errors due to the collision.
    
    The right solution is to use "mem=" together with "memmap=" to mark the
    unused RAM area reserved.
    
    Henceforth I force the kernel to use 2016MiB by passing "mem=2016M
    memmap=32M#2016M" instead of just "mem=2016M".
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    9d40aa53
kernel-parameters.txt 39.1 KB