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    SubjectRe: SNB PCI root information
    On Wed, Jun 20, 2012 at 3:34 PM, Ingo Molnar <mingo@kernel.org> wrote:
    > I mean, if we create a parameter space that tweaks data then why
    > not make it complete and allow *all* firmware data to be
    > (optionally) modified, from the kernel boot line?

    If there is proof that BIOSes get it wrong then just use this small
    additional patch:


    Signed-off-by: Ulrich Drepper <drepper@gmail.com>

    diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
    index fc09c27..7aceb84 100644
    --- a/arch/x86/pci/acpi.c
    +++ b/arch/x86/pci/acpi.c
    @@ -387,16 +387,16 @@ struct pci_bus * __devinit
    pci_acpi_scan_root(struct acpi_pci_root *root)
    return NULL;
    }

    - node = -1;
    + node = get_mp_bus_to_node(busnum);
    #ifdef CONFIG_ACPI_NUMA
    - pxm = acpi_get_pxm(device->handle);
    - if (pxm >= 0)
    - node = pxm_to_node(pxm);
    - if (node != -1)
    - set_mp_bus_to_node(busnum, node);
    - else
    + if (node == -1) {
    + pxm = acpi_get_pxm(device->handle);
    + if (pxm >= 0)
    + node = pxm_to_node(pxm);
    + if (node != -1)
    + set_mp_bus_to_node(busnum, node);
    + }
    #endif
    - node = get_mp_bus_to_node(busnum);

    if (node != -1 && !node_online(node))
    node = -1;

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      Last update: 2012-06-20 22:41    [W:0.022 / U:30.184 seconds]
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