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My VPS host uses Xen, and instead of using its custom kernels I could use my own (with pv-grub), the sample kernel of which I had installed to test this was is the following, I am running Debian 6 (Squeeze): http://packages.debian.org/squeeze/linux-image-2.6.32-5-xen-amd64

Would I be right to assume, that if I download the sources for 2.6.32-5 I can set up the appropriate Xen options to build a Xen compatible kernel just like the binary one listed?

Would I be able to apply say kernel patches (such as grsecurity as I've wanted), and apply the Xen configuration, to use for my VPS once compiled just like that?

Thank you, Ken.

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Just out of curiosity: what VPS host are you using? –  Michael Trausch Jul 25 '11 at 20:15
    
@Michael, Linode with the pv_grub kernel option for my own guest kernel. –  Alexander Jul 29 '11 at 6:19

1 Answer 1

up vote 2 down vote accepted

Yes, you can. You have the option of building a Debian kernel from the same sources, or building a kernel from vanilla sources. Mainline has support for Xen4 built into recent versions and no longer requires patches for Xen to work; the options for building a DomU are here.

Patching the Debian sources should be possible using the Debian make-kpkg command and friends.

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Full support for Xen dom0 and domU was merged into Linux Kernel 3.0 which has not yet been released. –  Ophidian Jul 13 '11 at 14:16
    
@Ophidian I believed domU works with current vanilla sources, and the OP doesn't need dom0. I am a little fuzzy, since I haven't worked with this for about 6 months and my kernel compilation was earlier than that. do you have sources? –  Michael Lowman Jul 13 '11 at 14:37
    
you are correct, I need to read closer. Full pv_ops domU support has been in for quite some time. The dom0 support announcement is here: blog.xen.org/index.php/2011/06/02/… –  Ophidian Jul 13 '11 at 19:47
    
@Michael, I apologize for the long delay however this works fine. It turns out the standard kernel will work (2.6.32.43), just need to grep and enable all the CONFIG_XEN_* entries that are appropriate. –  Alexander Jul 29 '11 at 6:20

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