Re: [Xen-devel] HVM hypercalls

[Ruslan Nikolaev <nruslan_devel@xxxxxxxxx>]

Yes, I tried this but it does not seem to work. BTW in paravirtualized mode it 
works fine, the problem is only with HVM.

I tried to specify root=/dev/xvda (my disk image has no partitions, entire disk 
image is a single file system).

My config is (I also tried to comment out device model but it does not help):

import os, re
arch = os.uname()[4]
if re.search('64', arch):
    arch_libdir = 'lib64'
else:
    arch_libdir = 'lib'

kernel = "/usr/lib/xen/boot/hvmloader"

builder='hvm'

vcpus=1

memory = 1024
shadow_memory = 8
name = "xenhvm1"
disk = [ 'file:/home/ruslan/fs1.img,xvda,w' ]
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
# boot on floppy (a), hard disk (c) or CD-ROM (d)
# default: hard disk, cd-rom, floppy
boot="c"

sdl=1
vnc=0
vncviewer=0
vncpasswd=''
stdvga=1
serial='pty'
usbdevice='tablet'

Thanks,
Ruslan

--- On Wed, 8/4/10, 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: Wednesday, August 4, 2010, 1:40 AM
>   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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> http://lists.xensource.com/xen-devel
> 





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