[Pkg-xen-devel] Bug#785187: Bug#785187: xen-hypervisor-4.5-amd64: Option ucode=scan is not working

[Konrad Rzeszutek Wilk]

> > according to the documentation the option ucode=scan should tell XEN to 
> > look for a microcode update in an uncompressed initrd.
> > 
> > While I don’t use the Debian kernel the tools to generate the initrd are 
> > part of Debian. The command „cpio -i < /boot/initrd.img-4.0.2-Dom0” 
> > creates the directory structure „kernel/x86/microcode/GenuineIntel.bin”, 
> > so I think the initrd is allright.


Is the initramfs compressed? The scanning code can't deal if the initramfs
is compressed - so you either have to glue the compressed initramfs and
the cpio with the microcode together (where the microcode has to go first).