• David Gibson's avatar
    [PATCH] powerpc: Remove lppaca structure from the PACA · 3356bb9f
    David Gibson authored
    
    
    At present the lppaca - the structure shared with the iSeries
    hypervisor and phyp - is contained within the PACA, our own low-level
    per-cpu structure.  This doesn't have to be so, the patch below
    removes it, making a separate array of lppaca structures.
    
    This saves approximately 500*NR_CPUS bytes of image size and kernel
    memory, because we don't need aligning gap between the Linux and
    hypervisor portions of every PACA.  On the other hand it means an
    extra level of dereference in many accesses to the lppaca.
    
    The patch also gets rid of several places where we assign the paca
    address to a local variable for no particular reason.
    Signed-off-by: default avatarDavid Gibson <dwg@au1.ibm.com>
    Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
    3356bb9f
head_64.S 52 KB