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SubjectRe: [PATCH] powernow-k8: depend on acpi-processor for SMP systems
On Wed, May 16, 2007 at 02:26:14PM -1000, Joshua Hoblitt wrote:
> I don't think this is quiet right either as Ed Sweetman has reported
> that this issue doesn't occur on single socket/multi-core systems.

I'm not sure why [*], because this should be preventing it..

if (num_online_cpus() != 1) {
printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n");
return -ENODEV;

num_online_cpus will return 2 in a dual-core system, even though there's
just one socket. Given they share a power plane, if there's a valid
PSB structure however, it may be usable. Though this isn't necessarily
true for all future dual-core AMD CPUs, and the ACPI tables really
should be preferred.


[*] unless you have the second core disabled or CONFIG_SMP=n

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