Mailing List Archive: RE: Xen HVM device emulation

Please check out these two Wiki pages as a starting point followed by an more questions to xen-users mailing list:

http://wiki.xensource.com/xenwiki/XenCommonProblems
http://wiki.xensource.com/xenwiki/XenBestPractices

Thanks.

Stephen Spector

Xen.org Community Manager
T: (772) 621-5062 | M: (954) 854-4257
stephen.spector@xen.org
http://blog.xen.org | @xen_com_mgr

Date: Fri, 16 Apr 2010 11:22:14 -0700
From: Anh Nguyen <nguyenminhanh@gmail.com>
Subject: [Xen-community
To: xen-community@lists.xensource.com
Message-ID:
<s2uf90f1ab01004161122l588a6f72la15869a4937fa375@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi all,

I am pretty new to Xen.

I want to learn more about Xen HVM device emulation model, what devices that
Xen support by default and where to look for them inside Xen code base.

If anyone knows or has a good pointer to those data, please let me know.

Thanks a lot,

-Anh

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Hi Stephen,

Thanks for responding. I already read these two documents but I want to know
more from a developer perspective, not an user perspective.

>From what I have learnt so far Xen HVM use qemu to emulate devices, and I
found the code for many virtual devices inside qemu-dm\hw directory.

For a lot of devices, such as virtual PCI buses, virtual RTC... those code
should be sufficient, but for others which have to talk with physical
devices, including network and storage, there must be a mechanism to
multiplex access from multiple HVM guests.

I wonder if what piece of code inside Xen that is responsible for this
multiplexing?

Thanks,

-Anh

On Thu, Apr 22, 2010 at 12:11 PM, Stephen Spector <
stephen.spector@citrix.com> wrote:

> Please check out these two Wiki pages as a starting point followed by an
> more questions to xen-users mailing list:
>
> http://wiki.xensource.com/xenwiki/XenCommonProblems
> http://wiki.xensource.com/xenwiki/XenBestPractices
>
> Thanks.
>
>
> Stephen Spector
>
> Xen.org Community Manager
> T: (772) 621-5062 | M: (954) 854-4257
> stephen.spector@xen.org
> http://blog.xen.org | @xen_com_mgr
>
>
>
>
>
> Date: Fri, 16 Apr 2010 11:22:14 -0700
> From: Anh Nguyen <nguyenminhanh@gmail.com>
> Subject: [Xen-community
> To: xen-community@lists.xensource.com
> Message-ID:
> <s2uf90f1ab01004161122l588a6f72la15869a4937fa375@mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi all,
>
> I am pretty new to Xen.
>
> I want to learn more about Xen HVM device emulation model, what devices
> that
> Xen support by default and where to look for them inside Xen code base.
>
> If anyone knows or has a good pointer to those data, please let me know.
>
> Thanks a lot,
>
> -Anh
>
>