XEN VM - Applying Intel CPU microcode update fails

Hi,
I just installed OEL5 and I get the following message on boot:
Applying Intel CPU Microcode update: FATAL: Module microcode not found.
ERROR: Module microcode does not exist in /proc/modules [Failed]
From my quick Google search this is caused by the XEN virutualization. If you you get the [Failed] message then you have a serious problem.
Any ideas?
Thanks
David

The same happens booting a xen linux kernel on original RHEL and derivatives (such has centos)
I just ignored it, and AFAIK there's no problem with xen.
Just my 2 cents.

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Applying Intel CPU microcode update

Hi,
after creating a virtual machine from OEL template, when the I connect to that virtual machine OEL booting process fail to Applying Intel CPU microcode update.
ghassan Hallaq

The same happens booting a xen linux kernel on original RHEL and derivatives (such has centos)
I just ignored it, and AFAIK there's no problem with xen.
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How do I update Intel CPU microcode.

I have got msi z77a gd65 motherboard. How do I update Intel CPU microcode.
01. Update CPU Microcode for Ivy Bridge E-1 and L-1(M12306A9_00000019).
&Update CPU Microcode for Sandy Bridge Q-0 and D-2(M12206A7_00000029).
Global Moderators help me.

Quote from: flobelix on 29-July-13, 05:33:53
What do you want to do? The 2500K is supported by the Z77A-GD65 out of the box no matter which bios version it is at.
You may look at this page http://www.station-drivers.com/forum/viewtopic.php?f=32&t=4575

[SOLVED] AMD Microcode update failed (on Xen host)

I have an Arch system running as a VM Host based on Xen 4.4.1
It is yet unclear to me why the VMHost (Dom0) cannot update the CPU microcode of the AMD Opteron 3365.
The following errors appear.
[ 9.664531] microcode: CPU0: patch_level=0x0600081c
[ 9.664548] microcode: CPU1: patch_level=0x0600081c
[ 9.664566] microcode: CPU2: patch_level=0x0600081c
[ 9.664580] microcode: CPU3: patch_level=0x0600081c
[ 9.664593] microcode: CPU4: patch_level=0x0600081c
[ 9.664607] microcode: CPU5: patch_level=0x0600081c
[ 9.664624] microcode: CPU6: patch_level=0x0600081c
[ 9.664639] microcode: CPU7: patch_level=0x0600081c
[ 9.664723] microcode: Microcode Update Driver: v2.00 <[email protected]>, Peter Oruba
[ 18.344286] microcode: CPU0: update failed for patch_level=0x06000832
[ 18.345579] microcode: CPU1: update failed for patch_level=0x06000832
[ 18.346899] microcode: CPU2: update failed for patch_level=0x06000832
[ 18.348202] microcode: CPU3: update failed for patch_level=0x06000832
[ 18.349488] microcode: CPU4: update failed for patch_level=0x06000832
[ 18.350776] microcode: CPU5: update failed for patch_level=0x06000832
[ 18.352063] microcode: CPU6: update failed for patch_level=0x06000832
[ 18.353352] microcode: CPU7: update failed for patch_level=0x06000832
I am aware that Xen can do some early loading of microcodes, since I have found clues in the Xen git logs.
But I guess Xen does not update the microcode, since the OS in Dom0 believes it is necessary to update the microcode.
Does anybody have a clue why updating the CPU microcode from within Dom0 fails?
Last edited by ArthurBorsboom (2015-01-10 12:45:29)

I have solved the issue by using the Xen early microcode loading with the following changes.
Copy the correct microcode binary to the boot folder.
sudo cp /lib/firmware/amd-ucode/microcode_amd_fam15h.bin /boot
Edit the Xen command line in /etc/xen/grub.conf from
XEN_HYPERVISOR_CMDLINE="dom0_mem=1024M,max:1024M xsave=1"
to
XEN_HYPERVISOR_CMDLINE="dom0_mem=1024M,max:1024M xsave=1 ucode=-1"
Hardcode the /etc/grub.d/09_xen configuration file to load the binary.
From
menuentry "Xen ${XEN_VERSION} / Arch Linux ${_KERNEL_PKG_} kernel" ${CLASS} {
$(save_default_entry)
if [ x\$feature_all_video_module = xy ]; then
insmod all_video
fi
set gfxpayload=keep
insmod ${BOOT_PART_FS}
if [ x\$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root ${BOOT_PART_HINTS_STRING} ${BOOT_PART_FS_UUID}
else
search --no-floppy --fs-uuid --set=root ${BOOT_PART_FS_UUID}
fi
echo '$(printf "Loading Xen %s ..." ${XEN_VERSION})'
multiboot ${REAL_DIR}/${XEN_BASENAME} ${REAL_DIR}/${XEN_BASENAME} ${XEN_HYPERVISOR_CMDLINE}
echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel ...'
module ${REAL_DIR}/${_KERNEL_FILE_} ${REAL_DIR}/${_KERNEL_FILE_} root=${GRUB_LINUX_ROOT_DEVICE} rw ${GRUB_LINUX_PARAMS}
echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel initramfs ...'
module ${REAL_DIR}/${_INITRAMFS_}
To
menuentry "Xen ${XEN_VERSION} / Arch Linux ${_KERNEL_PKG_} kernel" ${CLASS} {
$(save_default_entry)
if [ x\$feature_all_video_module = xy ]; then
insmod all_video
fi
set gfxpayload=keep
insmod ${BOOT_PART_FS}
if [ x\$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root ${BOOT_PART_HINTS_STRING} ${BOOT_PART_FS_UUID}
else
search --no-floppy --fs-uuid --set=root ${BOOT_PART_FS_UUID}
fi
echo '$(printf "Loading Xen %s ..." ${XEN_VERSION})'
multiboot ${REAL_DIR}/${XEN_BASENAME} ${REAL_DIR}/${XEN_BASENAME} ${XEN_HYPERVISOR_CMDLINE}
echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel ...'
module ${REAL_DIR}/${_KERNEL_FILE_} ${REAL_DIR}/${_KERNEL_FILE_} root=${GRUB_LINUX_ROOT_DEVICE} rw ${GRUB_LINUX_PARAMS}
echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel initramfs ...'
module ${REAL_DIR}/${_INITRAMFS_}
echo 'Loading AMD Microcode'
module ${REAL_DIR}/microcode_amd_fam15h.bin
Rebuild the grub configuration file
sudo grub-mkconfig -o /boot/grub/grub.cfg
And reboot
Check with the following command that Xen is running
dmesg | grep xen
Check with the following command that the microcode has the correct version
[arthur@orion1695 ~]$ dmesg | grep microcode
[ 9.379631] microcode: CPU0: patch_level=0x06000832
[ 9.379645] microcode: CPU1: patch_level=0x06000832
[ 9.379662] microcode: CPU2: patch_level=0x06000832
[ 9.379676] microcode: CPU3: patch_level=0x06000832
[ 9.379692] microcode: CPU4: patch_level=0x06000832
[ 9.379710] microcode: CPU5: patch_level=0x06000832
[ 9.379724] microcode: CPU6: patch_level=0x06000832
[ 9.379738] microcode: CPU7: patch_level=0x06000832
[ 9.379823] microcode: Microcode Update Driver: v2.00 <[email protected]>, Peter Oruba
[arthur@orion1695 ~]$
And as you see in this example, there is no attempt to update the microcode anymore, since it is already up-to-date.
I hope this helps other people facing this issue.

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[SOLVED]Can the Intel microcode update(/non-update) brick my computer?

Ref news: https://www.archlinux.org/news/changes- … deupdates/
Related forum posts:
https://bbs.archlinux.org/viewtopic.php?id=188777
https://bbs.archlinux.org/viewtopic.php?id=188252
This news sounds quite scary to me. The big question is if anything I do can brick my computer.
Does doing this on kernels < 3.17.2 brick my computer?
Will upgrading to 3.17.2 without doing this brick my computer?
Last edited by simendsjo (2014-10-23 07:25:02)

Hi,
I have a rather silly question. I can't figure out if I have Intel microcode updates enabled. I have installed the intel-ucode package from [extra] (extra/intel-ucode 20140624-1), and I get this when I check dmesg:
prakhar@sim74stic ~ $ dmesg |grep microcode
[ 11.576665] microcode: CPU0 sig=0x306a9, pf=0x10, revision=0x15
[ 11.709317] microcode: CPU0 sig=0x306a9, pf=0x10, revision=0x15
[ 11.710515] microcode: CPU0 updated to revision 0x1b, date = 2014-05-29
[ 11.710545] microcode: CPU1 sig=0x306a9, pf=0x10, revision=0x15
[ 11.710602] microcode: CPU1 sig=0x306a9, pf=0x10, revision=0x15
[ 11.711282] microcode: CPU1 updated to revision 0x1b, date = 2014-05-29
[ 11.711296] microcode: CPU2 sig=0x306a9, pf=0x10, revision=0x15
[ 11.711341] microcode: CPU2 sig=0x306a9, pf=0x10, revision=0x15
[ 11.712068] microcode: CPU2 updated to revision 0x1b, date = 2014-05-29
[ 11.712080] microcode: CPU3 sig=0x306a9, pf=0x10, revision=0x15
[ 11.712134] microcode: CPU3 sig=0x306a9, pf=0x10, revision=0x15
[ 11.712859] microcode: CPU3 updated to revision 0x1b, date = 2014-05-29
[ 11.712897] microcode: CPU4 sig=0x306a9, pf=0x10, revision=0x15
[ 11.712972] microcode: CPU4 sig=0x306a9, pf=0x10, revision=0x15
[ 11.713683] microcode: CPU4 updated to revision 0x1b, date = 2014-05-29
[ 11.713698] microcode: CPU5 sig=0x306a9, pf=0x10, revision=0x15
[ 11.713736] microcode: CPU5 sig=0x306a9, pf=0x10, revision=0x15
[ 11.714451] microcode: CPU5 updated to revision 0x1b, date = 2014-05-29
[ 11.714469] microcode: CPU6 sig=0x306a9, pf=0x10, revision=0x15
[ 11.714503] microcode: CPU6 sig=0x306a9, pf=0x10, revision=0x15
[ 11.714878] microcode: CPU6 updated to revision 0x1b, date = 2014-05-29
[ 11.714888] microcode: CPU7 sig=0x306a9, pf=0x10, revision=0x15
[ 11.714907] microcode: CPU7 sig=0x306a9, pf=0x10, revision=0x15
[ 11.715282] microcode: CPU7 updated to revision 0x1b, date = 2014-05-29
[ 11.715322] microcode: Microcode Update Driver: v2.00 <[email protected]>, Peter Oruba
My question is, did the microcode update work? And should I add it to mkinitcpio to trigger it early? (sudo modprobe microcode doesn't change the output above).
Last edited by prakharsingh95 (2014-10-23 16:21:56)

02f0:cpu id: A7 no microcode update loaded for alternate processor

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is your CPU the original one shipped with your ThinkPad?
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Message was edited by: U. Toad

Barbara,
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XEN VM - Applying Intel CPU microcode update fails

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