Pass CPUID String to VM in Linux KVM or Proxmox

Discussion in 'Linux Admins, Storage and Virtualization' started by Jeggs101, Jul 7, 2018.

  1. Jeggs101

    Jeggs101 Well-Known Member

    Joined:
    Dec 29, 2010
    Messages:
    1,412
    Likes Received:
    200
    Here's what I'm thinking of doing. I'm thinking of making VM's on say 18 core V3 CPUs. Then selling two VMs with half the RAM and saying something like "Xeon E5-2620 V3 equivalent"

    I am only going to have max 3 VMs per system, but it's cheaper to put one system together than three.

    Can I pass the CPUID string in? I will say equivalent on the ad to stay above board and the users will have higher clocks available since I want these to go well. But is it possible to have the guest VMs lscpu and see E5-2620 V3?
     
    #1
  2. i386

    i386 Well-Known Member

    Joined:
    Mar 18, 2016
    Messages:
    1,429
    Likes Received:
    327
    Hmm...

    CPUID is a cpu command that's called by tools like "lscpu". I don't think it's possible to catch these calls without emulating the cpu (magnitudes slower!) and then passing the modified string with the model number.
     
    #2
    Jeggs101 likes this.
  3. Jeggs101

    Jeggs101 Well-Known Member

    Joined:
    Dec 29, 2010
    Messages:
    1,412
    Likes Received:
    200
    Thanks! That's what I thought. I know when you do GPU pass-through of consumer cards you can change things like the hypervisor ID so I thought maybe it'll work.

    Everyone these days gets that hosting providers virtualize. It's still easier to just have the ID come up instead of having to explain the differences.
     
    #3
Similar Threads: Pass CPUID
Forum Title Date
Linux Admins, Storage and Virtualization Proxmox NVIDIA GPU passthrough Wednesday at 9:45 PM
Linux Admins, Storage and Virtualization Proxmox passthrough to Freenas Jul 14, 2018
Linux Admins, Storage and Virtualization OpenIndiana Hipster under Proxmox with SAS HBA PCI passthrough Jul 1, 2018
Linux Admins, Storage and Virtualization ESXi under Proxmox + pci-passthrough CX3 VF Dec 18, 2017
Linux Admins, Storage and Virtualization Proxmox vm l3 cache pass through Aug 15, 2017

Share This Page