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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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