From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anh Nguyen Subject: Re: a xen question Date: Thu, 6 May 2010 13:45:14 -0700 Message-ID: References: <4BDCC4EC.5070704@uiuc.edu> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0045226197==" Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: George Dunlap Cc: xen-devel@lists.xensource.com, Stefano Stabellini List-Id: xen-devel@lists.xenproject.org --===============0045226197== Content-Type: multipart/alternative; boundary=00032556491603a43f0485f30584 --00032556491603a43f0485f30584 Content-Type: text/plain; charset=ISO-8859-1 Hi George, I am interested in the xen-linux kernel for PV guests. For HVM guests, I find it a bit difficult to pinpoint exactly what devices are enabled because the ioemu-qemu-xen directory inside xen source seems to contain a lot of code not used by xen. Thanks, On Thu, May 6, 2010 at 1:36 PM, George Dunlap wrote: > Ahn, the backends and frontends depends on which version of the kernel > you're using. Do you want to look at the pv-ops kernel (the long-term > future), or the xen-linux kernel (a fork which will never make it > as-is into Linux, but is ATM more widely used)? > > Stefano, which devices are enabled in qemu in our Xen tree? Can you > give Anh some pointers on how to find out which files correspond to > those devices? Thanks! > > -George > > On Sun, May 2, 2010 at 12:47 AM, Anh Nguyen > wrote: > > Hi George, > > I want to measure the size of Xen virtual devices (in term of lines of > > code), for both HVM and PV guests. From what I learnt, Xen uses > > Qemu daemon running in Dom 0 to emulate virtual devices for HVM guests. > For > > PV guests, backend devices in Dom 0 talks to frontend devices in Dom U. > > I tried to post this question to xen-devel list but they did not go > through. > > I would really appreciate if you could help me to answer them, or point > me > > to the right direction: > > 1. What devices are offered to Xen HVM guests, what about Xen PV guests? > > 2. Where can I find the source code for those devices? > > Thanks a lot, > > Anh > > > > On Sat, May 1, 2010 at 5:18 PM, Sam King wrote: > >> > >> Hi George, > >> > >> One of my students, Anh (included in this email), has some questions > about > >> Xen. He has tried posting to the newsgroup without much luck, I was > hoping > >> that you could either answer his questions or point him in the right > >> direction. > >> > >> Cheers, > >> Sam > > > > > --00032556491603a43f0485f30584 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi George,

I am interested in the xen-linux kernel for P= V guests.

For HVM guests, I find it a bit difficul= t to pinpoint exactly what devices are enabled because the ioemu-qemu-xen d= irectory inside xen source seems to contain a lot of=A0code not used by xen= .

Thanks,

On Thu, May 6, 2010 at= 1:36 PM, George Dunlap <George.Dunlap@eu.citrix.com> wrote:
Ahn, the backends and frontends depends on which version of the kernel
you're using. =A0Do you want to look at the pv-ops kernel (the long-ter= m
future), or the xen-linux kernel (a fork which will never make it
as-is into Linux, but is ATM more widely used)?

Stefano, which devices are enabled in qemu in our Xen tree? =A0Can you
give Anh some pointers on how to find out which files correspond to
those devices? =A0Thanks!

=A0-George

On Sun, May 2, 2010 at 12:47 AM, Anh Nguyen <nguyenminhanh@gmail.com> wrote:
> Hi George,
> I want to measure the size of Xen virtual devices (in term of lines of=
> code), for both HVM and PV guests. From what I learnt, Xen uses
> Qemu=A0daemon=A0running in Dom 0 to emulate virtual devices for HVM gu= ests. For
> PV guests, backend devices in Dom 0 talks to frontend devices in Dom U= .
> I tried to post this question to xen-devel list but they did not go th= rough.
> I would really appreciate if you could help me to answer them, or poin= t me
> to the right direction:
> 1. What devices are offered to Xen HVM guests, what about Xen PV guest= s?
> 2. Where can I find the source code for those devices?
> Thanks a lot,
> Anh
>
> On Sat, May 1, 2010 at 5:18 PM, Sam King <kingst@uiuc.edu> wrote:
>>
>> Hi George,
>>
>> One of my students, Anh (included in this email), has some questio= ns about
>> Xen. =A0He has tried posting to the newsgroup without much luck, I= was hoping
>> that you could either answer his questions or point him in the rig= ht
>> direction.
>>
>> Cheers,
>> Sam
>
>

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