RE: [Xen-users] Supported Dom U platform

[Jeff Sturm <jeff.sturm@xxxxxxxxxx>]

Xen does virtualization, not emulation.   It supports several CPU architectures, but your domU sees the same CPU as your dom0.

 

That said, on x86-64 platforms you can mix/match 32-bit and 64-bit domains provided the hypervisor is a 64-bit build.   This works because the underlying hardware supports it, not because any emulation is taking place.

 

As I understand it Xen uses QEMU solely for device emulation.  It's required for HVM domains.  Pavarvirtualized domains don't need QEMU at all.

 

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Anh Nguyen
Sent: Saturday, May 01, 2010 7:24 PM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Supported Dom U platform

 

Hi everyone,

 

I have two questions:

 

1. Does anyone knows if Xen supports running Dom U (guest) platforms other than x86 and amd64? For examples: MIPs, arm...

I see MIPs and ARM related code inside tools\ioemu-qemu-xen but I am not sure if that is enough.

 

2. My understanding is Xen uses QEMU for HVM device emulation, and QEMU uses binary translation. Does that mean Xen HVM guests will have to go through the binary translation layer? Is this the case if the guest platform and the host platform are the same?

 

Best,

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