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

To: enming.teo@xxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Vt-d not working with 3.4.1
From: "Marc - A. Dahlhaus" <mad@xxxxxx>
Date: Wed, 19 Aug 2009 14:45:54 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, weidong.han@xxxxxxxxx, "'Bonenkamp, Ralf'" <ralf.bonenkamp@xxxxxxxx>
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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:


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.


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