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==IPI vs IPC==
I'm not sure whether it's really "IPI" instead of "IPC", but it makes much more sense!
There are also much better hits under Google for "IPI interrupt" than for "IPC" Interrupt.
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:Yeah, IPC was a typo; I was also editing IPC articles at the time. [[User:Jsmethers|Jsmethers]] 09:18, 10 January 2006 (UTC)
 
== IRQL ==
 
''In Windows, this has IRQL as 29.''
 
What is this IRQL-number?
 
It doesn't seem to be the IRQ-number, because the highest IRQ is 15 (0xF), when [[APIC]] is not used. Also according to [[Interrupt request]] the IPI is on IRQ13. Also APIC can use up to 224 IRQs, but by default the maximum that is used is 24. --[[User:MrBurns|MrBurns]] ([[User talk:MrBurns|talk]]) 09:04, 26 October 2009 (UTC)
 
== Cache coherency ==
 
Current version says: "In x86 based systems, an IPI synchronizes the cache and memory management unit (MMU) between processors."
I agree that IPI may be used on some systems for cache coherency, but x86 has (at least for several years) hardware cache coherency protocol (which is software-invisible and doesn't use IPI) <span style="font-size: smaller;" class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/134.191.232.68|134.191.232.68]] ([[User talk:134.191.232.68|talk]]) 12:19, 14 June 2011 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->