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    SubjectRe: [PATCH 7/8] x86/mrst: add nop functions to x86_init mpparse functions
    On Fri, 14 May 2010, Jacob Pan wrote:

    > Moorestown does not have BIOS provided MP tables, we can save some time
    > by avoiding scaning of these tables. e.g.
    > [ 0.000000] Scan SMP from c0000000 for 1024 bytes.
    > [ 0.000000] Scan SMP from c009fc00 for 1024 bytes.
    > [ 0.000000] Scan SMP from c00f0000 for 65536 bytes.
    > [ 0.000000] Scan SMP from c00bfff0 for 1024 bytes.
    >
    > Searching EBDA with the base at 0x40E will also result in random pointer
    > deferencing within 1MB. This can be a problem in Lincroft if the pointer
    > hits VGA area and VGA mode is not enabled.
    >
    > Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>

    Acked-by: Thomas Gleixner <tglx@linutronix.de>

    > ---
    > arch/x86/kernel/mrst.c | 5 +++++
    > 1 files changed, 5 insertions(+), 0 deletions(-)
    >
    > diff --git a/arch/x86/kernel/mrst.c b/arch/x86/kernel/mrst.c
    > index 83c23d6..9b62d32 100644
    > --- a/arch/x86/kernel/mrst.c
    > +++ b/arch/x86/kernel/mrst.c
    > @@ -311,4 +311,9 @@ void __init x86_mrst_early_setup(void)
    > x86_init.pci.fixup_irqs = x86_init_noop;
    >
    > legacy_pic = &null_legacy_pic;
    > +
    > + /* Avoid searching for BIOS MP tables */
    > + x86_init.mpparse.find_smp_config = x86_init_noop;
    > + x86_init.mpparse.get_smp_config = x86_init_uint_noop;
    > +
    > }
    > --
    > 1.6.3.3
    >


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