Re: [Xen-devel] Vt-d not working with 3.4.1

["Marc - A. Dahlhaus" <mad@xxxxxx>]

Pasi Kärkkäinen schrieb:
> On Wed, Aug 19, 2009 at 02:45:54PM +0200, Marc - A. Dahlhaus wrote:
>   
> > Mr. Teo En Ming (Zhang Enming) schrieb:
> >     
> > > Dear Pasi,
> > >
> > > I suspect that there may be some problems with the Xen 3.4.1 changeset 
> > > of 6 August 2009.
> > > The bzImage kernel image that I compiled is not a bzip2 file, hence I 
> > > cannot bzcat it. If I tried to do so, it will complain that it is not 
> > > a bzip2 file.
> > > I did specify the following in my kernel configuration:
> > >
> > > CONFIG_HAVE_KERNEL_BZIP2=y
> > > CONFIG_KERNEL_BZIP2=y
> > > CONFIG_RD_BZIP2=y
> > > CONFIG_DECOMPRESS_BZIP2=y
> > >
> > > When I do a "xm dmesg" command, I see the following output:
> > >
> > > (XEN) Intel VT-d DMAR tables have been parsed.
> > > (XEN) Intel VT-d Snoop Control not supported.
> > > (XEN) Intel VT-d DMA Passthrough not supported.
> > > (XEN) Intel VT-d Queued Invalidation not supported.
> > > (XEN) Intel VT-d Interrupt Remapping not supported.
> > > (XEN) I/O virtualisation enabled
> > > (XEN) I/O virtualisation for PV guests disabled
> > >
> > > So can I confirm that I have VT-d support enabled?
> > >
> > > I have checked. Both bzImage and vmlinux.bin inside arch/x86/boot are 
> > > NOT ELF images.
> > > Only vmlinux and vmlinux.bin inside arch/x86/boot/compressed are ELF64 
> > > images.
> > > However, vmlinux inside compressed cannot boot successfully.
> > >
> > > Only vmlinux.bin inside compressed can boot successfully, and this is 
> > > what I am using now.
> > > Regarding X server (GUI) unable to start, I have a backtrace inside 
> > > /var/log/Xorg.0.log.
> > > It complains about Fatal Server error:
> > > Caught signal 11. Server aborting.
> > >
> > >       
> > The bzImage has nothing to do with bzip2 compression and the current 
> > dom0 loader can only decode that CONFIG_KERNEL_GZIP based image.
> > Please change your config to use CONFIG_KERNEL_GZIP instead of 
> > CONFIG_KERNEL_BZIP2.
> >     
> Actually there is a patch to support bzip2 and LZMA compression:
> http://lists.xensource.com/archives/html/xen-devel/2009-08/msg00351.html
This is for the domU builder in userspace... Dom0 builder is located in 
xen/arch/x86/ ...
Marc

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