Enable apic ext id to use 256 apic id for AMD64
YhLu at tyan.com
Mon Jan 10 11:51:04 CET 2005
For dual core and lifting apic id, you can not just use apic id as node id.
And you have to use
Lapicid() & 0xf
Or cupid to get it.
From: Li-Ta Lo [mailto:ollie at lanl.gov]
Sent: Monday, January 10, 2005 2:14 PM
Cc: Stefan Reinauer; Ronald G. Minnich; LinuxBIOS; Andi Kleen;
discuss at x86-64.org; jamesclv at us.ibm.com; suresh.b.siddha at intel.com; Matt
Subject: RE: Enable apic ext id to use 256 apic id for AMD64
On Mon, 2005-01-10 at 15:18, YhLu wrote:
> Please refer s4882 to change the MB that you support.
> nodeid = lapicid() & 0xf;
> orm with initial apic id
> nodeid = (cpuid_ebx(1) >> 24) & 0xf;
What is this thing all about ?
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