• David Rientjes's avatar
    x86, numa: Fix numa emulation calculation of big nodes · 68fd111e
    David Rientjes authored
    numa=fake=N uses split_nodes_interleave() to partition the system into N
    fake nodes.  Each node size must have be a multiple of
    FAKE_NODE_MIN_SIZE, otherwise it is possible to get strange alignments.
    Because of this, the remaining memory from each node when rounded to
    FAKE_NODE_MIN_SIZE is consolidated into a number of "big nodes" that are
    bigger than the rest.
    
    The calculation of the number of big nodes is incorrect since it is using
    a logical AND operator when it should be multiplying the rounded-off
    portion of each node with N.
    Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
    LKML-Reference: <alpine.DEB.2.00.1002151342230.26927@chino.kir.corp.google.com>
    Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
    68fd111e
numa_64.c 23.1 KB