Our kernels are built straight from mainline now, so there is no need to supply the source.

You can grab the .config from zcat /proc/config.gz

-Chris

* Messages for package sys-fs/udev-171-r8:

* Unable to find kernel sources at /usr/src/linux
* Unable to calculate Linux Kernel version for build, attempting to use running version
* CONFIG_SYSFS_DEPRECATED: should not be set. But it is.
* CONFIG_BLK_DEV_BSG: is not set when it should be.
* Please check to make sure these options are set correctly.
* Failure to do so may cause unexpected problems.
*
* udev-171 does not support Linux kernel before version 2.6.32!
*
* You need to add udev-mount to the sysinit runlevel.
* If you do not do this,
* your system will not be able to boot!
* Run this command:
* rc-update add udev-mount sysinit
*
* persistent-net does assigning fixed names to network devices.
* If you have problems with the persistent-net rules,
* just delete the rules file
* rm /etc/udev/rules.d/70-persistent-net.rules
* and then reboot.
*
* This may however number your devices in a different way than they are now.
*
* If you build an initramfs including udev, then please
* make sure that the /sbin/udevadm binary gets included,
* and your scripts changed to use it,as it replaces the
* old helper apps udevinfo, udevtrigger, ...
*
* mount options for directory /dev are no longer
* set in /etc/udev/udev.conf, but in /etc/fstab
* as for other directories.
*
* If you use /dev/md/*, /dev/loop/* or /dev/rd/*,
* then please migrate over to using the device names
* /dev/md*, /dev/loop* and /dev/ram*.
* The devfs-compat rules have been removed.
* For reference see Bug #269359.
*
* Rules for /dev/hd* devices have been removed
* Please migrate to libata.
*
* For more information on udev on Gentoo, writing udev rules, and
* fixing known issues visit:
* http://www.gentoo.org/doc/en/udev-guide.xml

$ echo =sys-kernel/vanilla-sources-3.6.2 symlink >> /etc/portage/package.use
$ echo =sys-kernel/vanilla-sources-3.6.2 ~x86 >> /etc/portage/package.accept_keywords
$ emerge =sys-kernel/vanilla-sources-3.6.2

This actually breaks things for gentoo, and possibly other linux distributions as well

Use pv_grub instead and run your distro's kernel if you have problems.

echo 1 > /proc/sys/xen/independent_wallclock

echo "xen.independent_wallclock = 1" >> /etc/sysctl.conf

echo "echo 1 > /proc/sys/xen/independent_wallclock" >> /etc/conf.d/local.start 

The good news is that you aren't running a HVM kernel right now, as Linode only does PV. The independent_wallclock setting is not a part of the Xen support in the mainline kernel, either; guests are expected to maintain their own clock. You should be OK, particularly if you build from the existing /proc/config.gz.