From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: x2APIC emulation for HVM guest
Date: Thu, 02 Dec 2010 06:31:09 +0100
Message-ID: <4CF72F1D.5090107@redhat.com>
References: <201012021009.36497.sheng.yang@intel.com>
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To: "Yang, Sheng" <sheng.yang@intel.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Keir Fraser <keir.fraser@eu.citrix.com>
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On 12/02/2010 03:09 AM, Yang, Sheng wrote:
> This patch would enable Xen to handle x2APIC MSR accessing of HVM guest, which is
> faster(avoid decoding of MMIO accessing). The credit comes to Gleb Natapov who
> complete the work for KVM.

Compared to Gleb's patch, I think yours is missing support for directed 
EOI in the LAPIC emulation.  Linux doesn't use it, but I think it's easy 
enough that it's better to do it early.

Paolo