MADT enumeration for x86_64

Michael Neumann mneumann at
Thu Sep 23 05:44:14 PDT 2010

Am 23.09.2010 14:24, schrieb elekktretterr at
>> Hi,
>> Last year sephe implemented MADT enumeration for i386. These changes
>> were missing for x86_64. I ported them to x86_64 and now my HP Compaq
>> 6710b laptop is booting SMP (without APIC_IO) on x86_64. I'd like to
>> commit the changes if no one objects. Almost all changes are identical
>> to what sephe made.
>> If you give me go, I'll commit.
> I'd like to note while my laptop works using the original MADT enumeration
> for i386, APIC_IO has to be disabled otherwise it panics. I believe
> FreeBSD doesn't even have an APIC_IO option in the config. Shouldn't
> "options SMP" and APIC_IO be merged? I can't remember how many times I
> accidently compiled kernel with APIC_IO and screwed up.

I can't comment on APIC_IO. But if you have an amd64 laptop with a
broken mptable enumeration (like my laptop), then it would be nice if
you could try out my (sephe's) patches. Before sephe's patches to i386,
I couldn't get SMP on i386 working with my laptop.



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