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

[Ian Campbell]

Thanks Atom2, thanks for the refs, I've added the Debian bug and the
submitter back to the CC.

On Wed, 2015-05-13 at 22:11 +0200, Atom2 wrote:
> Am 13.05.15 um 15:41 schrieb Ian Campbell:
> > I think I remember some discussion of something in this area not too
> > long ago on xen-devel. CC-s added.
> I assume you refer to this discussion which happend to be on the 
> xen-users mailing list:
> http://lists.xen.org/archives/html/xen-users/2014-05/msg00052.html
> 
> Especially look at the first answer 
> (http://lists.xen.org/archives/html/xen-users/2014-05/msg00053.html).

This says "not 'cpio -o c' as some information on the internet
suggests", do you have a link? Is it to something the xenproject
controls and could update (i.e. our wiki and/or in tree docs?)

Cheers,
Ian.
> Following those points mentioned in there should get you up and running 
> - unless there's really a bug lurking somewhere.
> 
> My guess is that the cpio archive was not created with the (required) 
> cpio option "-H newc".
> 
> Regards Atom2
> > Konrad, do you know of any issues with ucode=scan in 4.4?
> >
> > On Wed, 2015-05-13 at 10:27 +0200, Stephan Seitz wrote:
> >> 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
> >>
> >> _______________________________________________
> >> Pkg-xen-devel mailing list
> >> Pkg-xen-devel at lists.alioth.debian.org
> >> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-xen-devel
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel at lists.xen.org
> > http://lists.xen.org/xen-devel
> 
> 
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