question about the guestOS boot

[tgh <tianguanhua@ncic.ac.cn>]

hi
I try to understand the code about vm create
and now I am confused about which code does the guestOS start with to run ?

xen domain0 uses the function xc_domain_creat() and xc_linux_build() to
prepare the necessary struct such as vcpu_guest_context and other things
for vm guestOS to bootup , in the xc_linux_build(),the initrd is also
loaded in,is it right?
then guestOS does not run the regular bootloader ,is it right?

then I am confused about which function or which lines of the code does
the guestOS start with ?


could you help me

Thanks in advance