Re: [PATCH] x86_64 write apic id fix

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Vivek Goyal wrote:

o Apic id is in most significant 8 bits of APIC_ID register. Current code
 is trying to write apic id to least significant 8 bits. This patch fixes
 it.

o This fix enables booting uni kdump capture kernel on a cpu with non-zero
 apic id.

Signed-off-by: Vivek Goyal <[email protected]>
---

What difference does it make in the first place? In APIC_init_uniprocessor() you write back the apic id read before from processor, not from mp table (because you wouldn't be in APIC_init_uniprocessor() otherwise).

--Mika

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