Hello
                                Khris, 
                                
                                Thanks a lot for your proposal !
                                
                                I tried to upgrade it last week without
                                success. 
                                
                                I follow this "howto" : 
http://wiki.xen.org/xenwiki/Xen4.0?highlight=%28xen%29|%284.0%29
                                
                                I downloaded the source package. 
                                
cd xen-4.0
make xen
make tools
make stubdom
make install-xen
make install-tools
make install-stubdom
make world => To download and compile the new kernel 2.6.32.x
                                When it's over, in my /boot directory I
                                have the xen-4.0.1.gz, the
                                vmlinux-.2.6.32 but not the
                                initrd.img-2.6.32 ?
                                
                                I never compiled a kernel myself...
                                
                                Have a nice day ;)
                                
                                
                                Le 14/09/2010 21:24, khris4 a écrit :
                                
                                  It's not very hard to compile Xen for Centos 5.5, I did it last week using
xen 4.0.1 and  2.6.32.21 pv_op dom0 kernel. Let me know if you need any
help.