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

[Stephan Seitz]

Package: xen-hypervisor-4.5-amd64
Version: 4.5.0-1
Severity: normal

Dear Maintainer,

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.

But according to /proc/cpuinfo the microcode update doesn’t happen. If 
I copy GenuineIntel.bin to /boot, create a new module section in grub.cfg 
and boot with ucode=-1, then the update is working. In both cases dmesg 
or „xl dmesg” don’t tell anything about microcode updates (successfull or 
not).

The option ucode=scan doesn’t work with XEN 4.4 either or with 3.6 
kernels.

-- System Information:
Debian Release: stretch/sid
  APT prefers oldoldstable-updates
  APT policy: (500, 'oldoldstable-updates'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.0.2-Dom0 (SMP w/8 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

xen-hypervisor-4.5-amd64 depends on no packages.

Versions of packages xen-hypervisor-4.5-amd64 recommends:
ii  xen-utils-4.5  4.5.0-1

xen-hypervisor-4.5-amd64 suggests no packages.

-- no debconf information

-- 
| Stephan Seitz          E-Mail: stse at fsing.rootsland.net |
| Public Keys: http://fsing.rootsland.net/~stse/keys.html |
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