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Re: [Xen-devel] [Q] Is qemu used when we use VTd?

Hi, Kevin

Tian, Kevin wrote:
>> From: Akio Takebe [mailto:takebe_akio@xxxxxxxxxxxxxx] 
>> Sent: 2008年9月11日 19:07
>> Hi,
>> Thank you.
>> And mmio is traped by hypervisor,
>> then hypervisor do mmio instead of HVM guest, Right?
> Which mmio are you actually talking? If you mean MMIO
> ranges in PCI BARs of passthrough device, they can be
> directly accessed by HVM with p2m entry setup accord-
> ingly, if MMIO range falls in 4k page granularity.
Thank you very much. I talked about MMIO ranges
in PCI BARs of pass through device using VT-d.

Does hypervisor trap only MMIO by APIC access?

Best Reards,

Akio Takebe

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