Messages in this thread | | | Date | Sun, 29 Apr 2007 10:51:32 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage |
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Jeremy Fitzhardinge wrote: > Eric W. Biederman wrote: >> All it does is set a flag that tells a bootloader. >> "Hey. I can run when loaded a non-default address, and this is what >> you have to align me to." >> >> All relocation processing happens in the kernel itself. >> > > Is it possible to decompress and extract the kernel image from the > bzImage without executing it? Ie, is there enough information to find > the compressed data part of the bzImage by inspection? > > At some point we'll need to change the Xen domain builder to handle > bzImage files, and it would be best if we didn't need to run them. >
Probabilistically, you might be able to (search for a gzip header), but it is *definitely* not guaranteed by protocol.
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