Re: [Qemu-devel] [PATCH 1/1] Introduce a new bus "ICC" to connect APIC

[Jan Kiszka]

On 2011-10-23 17:54, Blue Swirl wrote:
> On Sun, Oct 23, 2011 at 15:45, Jan Kiszka <address@hidden> wrote:
>> On 2011-10-23 14:40, Blue Swirl wrote:
>>> I'm not sure that a full bus is needed for now, even if it could match
>>> real HW better, since the memory API already provides the separation
>>> needed. Perhaps this would be needed later to make IRQs per-CPU also,
>>> or to put IOAPIC also to the bus?
>>
>> The ICC interconnects LAPICs and IOAPICs.
> 
> But not between CPU core and its LAPIC?

Nope, that link is core-internal and has nothing to do with the ICC. See
e.g. Figure 2-2 of Intel's "MultiProcessor Specification".

Jan

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