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

[Pasi Kärkkäinen <pasik@xxxxxx>]

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

-- Pasi

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