On Thu, 4 Jun 2009 19:52:36 -0700 (PDT) david@xxxxxxx wrote:
> this is 2.6.30-rc7
Were any earlier kernels OK?
> with a patch added to debug a nv sata driver
> incompatibility with the Intel SSDs on a tyan motherboard
>
> on one system it sees all 8 cores, on the other system it only initializes
> one core.
>
> can anyone help me spot what's going wrong in the one that's only seeing a
> single core? If I'm reading things correctly it's seeing both sockets for
> the NUMA setup, but then only initializing one core on the first socket.
good:
SMP: Allowing 8 CPUs, 4 hotplug CPUs
bad:
SMP: Allowing 1 CPUs, 0 hotplug CPUs
perhaps due to
ACPI: No APIC-table, disabling MPS
You could have a poke around in arch/x86/kernel/smpboot.c() and find
out what happened here. I'd be suspecting this code triggered:
/* no processor from mptable or madt */
if (!num_processors)
num_processors = 1;
because ACPI doesn't like that board.
Did you look into updating the BIOS?
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