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Re: [Xen-devel] Unstable fail to load dom0

To: Andrew Lyon <andrew.lyon@xxxxxxxxx>
Subject: Re: [Xen-devel] Unstable fail to load dom0
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Date: Fri, 27 Mar 2009 14:21:32 +0000
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On Fri, 2009-03-27 at 10:16 -0400, Andrew Lyon wrote:
> Hi,
> 
> I just tried to upgrade one of my systems to Xen unstable, Xen itself
> boots ok but it hangs after "Loading dom0", I think the cause of the
> problem is that the necessary support for loading compressed kernel
> (vmlinuz/bzImage) was not compiled in properly, I seem to recall that
> recently the compression code was updated and now supports many
> different compression schemes, what libs etc are required to build
> with support for bzImage and vmlinuz?

For domain0 the decompression code is built into the hypervisor itself
and only supports gzip style compression (historically the only choice).

Therefore your kernel config must have:
        CONFIG_KERNEL_GZIP=y
        # CONFIG_KERNEL_BZIP2 is not set
        # CONFIG_KERNEL_LZMA is not set

Ian.




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