[LinuxBIOS] x86_64: apic id lift patch
yhlu.kernel at gmail.com
Mon Nov 21 23:17:35 CET 2005
> Can you please explain clearly:
> - What are you changing.
1. use core_vir instead of x86_max_cores, for E0 later single core,
core_vir could be 2, and x86_max_cores still is 1. So it makes node
2. not assuming that lifted apic id is continous. We can get exact
node id and core id from initial apicid.
> - What was the problem with the old behaviour
1. for E0 single core, node 2, initial apicid is 4, and old cold will
get node=4 instead of 2.
2. if the lifted apicid is not continous, it will assign strange node
id to the cpu.
> - Why that particular change
1. We can get exact node id and core id from initial apicid for E0 later.
> - Why can't that APIC number setup not be done by the BIOS itself
1. That patch the code more generic. and don't assume the lifted
apicid is continous.
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