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    SubjectRe: SNB PCI root information
    Le 22/06/2012 22:41, Yinghai Lu a écrit :
    > On Fri, Jun 22, 2012 at 1:38 PM, Brice Goglin <brice.goglin@gmail.com> wrote:
    >> Le 22/06/2012 19:28, Yinghai Lu a écrit :
    >>> On Fri, Jun 22, 2012 at 12:14 AM, Brice Goglin <brice.goglin@gmail.com> wrote:
    >>>
    >>>>> BIOS _PXM return 0 for both pci root buses?
    >>>>>
    >>>> Here's dmesg.
    >>>> I can't say for sure whether _PXM returns 0 since I don't know how to
    >>>> read all this :) But Linux puts the first socket cpumap in
    >>>> /sys/bus/pci/devices/*/local_cpus (and that's wrong according to the
    >>>> motherboard manual and according to the performance we see).
    >>>>
    >>> hi, looks like you system bios does not provide _PXM for the root bus.
    >>>
    >> So why does Linux say that all buses are close to socket 0 instead of
    >> close to everything as usual?
    > if (bus && node != -1) {
    > #ifdef CONFIG_ACPI_NUMA
    > if (pxm >= 0)
    > dev_printk(KERN_DEBUG, &bus->dev,
    > "on NUMA node %d (pxm %d)\n", node, pxm);
    > #else
    > dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
    > #endif
    > }
    >
    > so can you boot with "debug ignore_loglevel" ?
    >

    I can't find anything relevant in the debug log. The code has changed a
    lot since my old SLES11 but I don't see any old message either. I guess
    "bus && node != -1 && pxm>=0" evaluates to false.

    Brice

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