Re: [Xen-users] HVM help please

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2012-06-26 at 00:03 +0100, Alexandre Kouznetsov wrote:
> Hello.
> 
> El 25/06/12 17:54, Shane Johnson escribió:
> > It would seem that for some reason with this setup it can't use
> > vmlinuz files that compressed with bzip2.   Therefore I followed these
> > instructions :
> > http://old-list-archives.xen.org/archives/html/xen-users/2010-09/msg00586.html
> > and now it is working fine.
> What's so special in your setup?
> Home-complied kernel or hypervisor image?
> 
> Debian stock Xen boots bzip2-compressed Dom0 kernels just fine, :
> # file /boot/vmlinuz-2.6.32-5-xen-amd64
> /boot/vmlinuz-2.6.32-5-xen-amd64: Linux kernel x86 boot executable 
> bzImage, version 2.6.32-5-xen-amd64 (unknown@Deb, RO-rootFS, swap_dev 
> 0x2, Normal VGA

bzImage != bzip2. A bzImage is a *big*zImage, big meaning that the
kernel image can be larger than some ancient real-mode limit (~1M, I
think). A bzImage can use one of a number of compression algorithms,
historically gzip but bzip2, lzma and xz are also supported by the
kernel these days -- you'd have to look in the relevant config to see
which used by a particular image.

I believe Debian 2.6.32 kernels used gzip.

Ian.


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