Setting up GPU passthrough on Windows 10 VM

wmsmckay

New Member
Apr 28, 2021
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I am new to Proxmox and relatively new to Linux. I have my server up and running and I am trying to get my GPU to passthrough so it can be used in a Windows 10 VM. I have followed a few tutorials, and gotten closer and closer. My current issue is, when I try to start the VM from the console I get the following errors:

Code:
kvm: warning: host doesn't support requested feature: CPUID.01H:ECX.f16c [bit 29]
kvm: warning: host doesn't support requested feature: CPUID.01H:ECX.rdrand [bit 30]
kvm: warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0]
kvm: warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7]
kvm: warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9]
kvm: Host doesn't support requested features
start failed: QEMU exited with code 1

I have not found a solution that will allow me to start the VM and move onto fixing the next issue.
 
What did you configure for the CPU type of the VM? Is it "host" and if not, does it match the physical CPU? Those error messages usually appear if the VM wants some CPU features that the physical CPU does not provide.
 
What did you configure for the CPU type of the VM? Is it "host" and if not, does it match the physical CPU? Those error messages usually appear if the VM wants some CPU features that the physical CPU does not provide.
My conf file has:
Code:
cpu: IvyBridge,flags=+pcid
That was what one of the tutorial said to add. I had tried the default for my server (kvm64 I'm pretty sure) and I had another problem so I tried something new.

EDIT:
If I use the default setting, this is the error I get:
Code:
kvm: -device ide-cd,bus=ide.0,unit=1,drive=drive-ide1,id=ide1: Can't create IDE unit 1, bus supports only 1 units
start failed: QEMU exited with code 1

I had to check, but my Xeon E5-2630 is in the SandyBridge grouping which gives the same error as the kvm64.
 
Last edited:

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