Re: [CentOS-virt] centos-virt CPU microcode updates?

On 5/16/19 2:12 AM, Karel Hendrych wrote:

Hi,

is there any guide for CPU microcode updates on CentOS6, Xen 4.10, kernel 4.9 ?

I'm not sure off the top of my head.

You can add ucode=scan to the xen command line, add a file /path/to/microcode_file as the last item in your boot list, and generate that microcode file using something like:

iucode_tool --write-earlyfw "${OUT_BLOB_FILE}" \ "${TEMP_DIR_NAME}/intel-ucode" \ "${TEMP_DIR_NAME}/intel-ucode-with-caveats"

Where the last two items have been extracted from the intel microcode tarball.

--Sarah