On Tue, Nov 17, 2009 at 10:40:02AM +0800, fly.limin wrote:
> Hi:
> recently i am researching fast boot from linux kernel to Xen hypervisor,
> it means when linux is running on the real machine, i just want to switch to
> Xen hypervisor without going through bootloader. both linux and dom0 of Xen
> using the same filesystem. since we boot Xen with the following command in
> grub:
>
> title Xen 3.1.0 / XenLinux 2.6.18
> kernel /boot/xen-3.gz
> module /boot/vmlinuz-2.6.18-xen ro root=LABEL=/ rhgb quiet
> module /boot/initrd-2.6.18-xen.img
> it's different from linux, but i think there are something in common.
> so is there any suggestions for me!
Kexecing from Linux to Xen and vice-versa should work fine.
On x86 try something like this:
kexec -l -t multiboot-x86 \
--append="$XEN_ARGS" \
--module="/boot/vmlinuz-2.6.18-xen ro root=LABEL=/ rhgb quiet" \
--module=/boot/initrd-2.6.18-xen.img \
/boot/xen-3.gz
kexec -e
Or on ia64 try something like this:
kexec -l \
--append="$XEN_ARGS -- ro root=LABEL=/ rhgb quiet" \
--initrd=/tmp/initramfs_data.cpio \
--vmm=/boot/xen-3.gz \
/boot/vmlinuz-2.6.18-xen
Where $XEN_ARGS is any command line parameters that you want to
provide to the hypervisor. In the case of the example you gave
it would be empty in which case the --append line in my x86 example
could be removed.
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