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Re: [Qemu-devel] xAPIC version register for >P4/Xeon CPUs


From: Markus Duft
Subject: Re: [Qemu-devel] xAPIC version register for >P4/Xeon CPUs
Date: Wed, 05 Jan 2011 08:41:53 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.12) Gecko/20101108 Lightning/1.0b3pre Thunderbird/3.1.6

On 01/03/2011 04:31 PM, Markus Duft wrote:
> Hi!
> 
> Another question: Shouldn't the APIC version be 0x14 for CPUs since P4/Xeon? 
> At least according to the Intel docs, since then the xAPIC is used, which has 
> 0x14 as version (see intel manuals, vol 3a "10.4.8 Local APIC Version 
> Register". reading the APIC version register yields 0x11 for all CPUs on qemu 
> currently (so local APIC, not local xAPIC).
> 
> is this inteded? if yes, why? (it is incompatible with the specs, right?).

ping... if nobody knows, a "nobody knows..." would do, too ;)

regards, Markus

> 
> Regards, Markus
> 




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