Re: [Xen-devel] HVM hypercalls

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

 On 08/03/2010 12:48 PM, Ruslan Nikolaev wrote:
> I've just tried to configure newever version (2.6.32.16) from repositary. 
> However, boot fails because no root device is found. I am using disk image (the 
> line in HVM config is disk = [ 'file:/home/ruslan/fs1.img,hda,w' ])
> I also tried to compile kernel with 'blktap' driver which is disabled in 
> default kernel config, but it does not help.
What is your root= parameter?  If you're using pv-on-hvm drivers, then 
the device will be named /dev/xvd[a-d] (for the moment).  It's very 
strongly recommended that you don't use a device-based root name (ie, 
use LABEL= UUID= or LVM for your root device) so that your config is 
failsafe against root device name changes.
    J

> The previous version (2.6.31.13) worked fine with the same disk image and 
> default configuration.
>
> Thanks,
> Ruslan.
>
> --- On Sat, 7/31/10, Jeremy Fitzhardinge<jeremy@xxxxxxxx>  wrote:
>
> > From: Jeremy Fitzhardinge<jeremy@xxxxxxxx>
> > Subject: Re: [Xen-devel] HVM hypercalls
> > To: "Ruslan Nikolaev"<nruslan_devel@xxxxxxxxx>
> > Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
> > Date: Saturday, July 31, 2010, 4:07 AM
> >    On 07/30/2010 09:06 AM, Ruslan
> > Nikolaev wrote:
> > > I have 2 kernels:
> > >
> > > 1. From Xen repositary pvops-git (2.6.31.13).
> > You want 2.6.32.16 from xen.git - the branch is
> > xen/stable-2.6.32.x
> >
> >       J
> >
> > > 2. From kernel.org: 2.6.32.16
> > >
> > > Thank you!
> > > Ruslan.
> > >
> > >
> > > --- On Thu, 7/29/10, Jeremy Fitzhardinge<jeremy@xxxxxxxx>
> > wrote:
> > > > From: Jeremy Fitzhardinge<jeremy@xxxxxxxx>
> > > > Subject: Re: [Xen-devel] HVM hypercalls
> > > > To: "Ruslan Nikolaev"<nruslan_devel@xxxxxxxxx>
> > > > Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > Date: Thursday, July 29, 2010, 11:47 PM
> > > >     On 07/29/2010 11:55 AM, Ruslan
> > > > Nikolaev wrote:
> > > > > Thank you very much! I'll try this. BTW is it
> > required
> > > > to do this for every module with HVM hypercalls or
> > there is
> > > > some shared initialization code in HVM guest
> > (Linux) similar
> > > > to one used in paravirtualized guests?
> > > > > If it's supposed to be in a module, is there
> > any good
> > > > example I can look at?
> > > > > AFAIK hypercall_page is being initialized on
> > Xen side
> > > > with appropriate vmcall/vmmcall code. Is this
> > CPUID
> > > > mechanism a standard way to obtain hypercall_page
> > reference
> > > > on HVM domain?
> > > >
> > > > What kernel are you working with?  There's
> > already
> > > > code to implement pv-on-hvm support for various
> > recent pvops
> > > > kernels, so you can just base your work on those.
> > > >
> > > >        J
> > >
> > > _______________________________________________
> > > Xen-devel mailing list
> > > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-devel
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel

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