QEMU 10.1 available on pve-test and pve-no-subscription as of now

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Upstairs_Cycle384 said:
@t.lamprecht enabled MBEC/GMET at the KVM level in

https://git.proxmox.com/?p=pve-kernel.git;a=commit;h=1e810d779b50dd5e7395fa65ad7b3cbf89b910c1

Any chance GMET/MBEC patches from QEMU 11 are getting backported to pve's QEMU 10.x so that his enhancement can be used?

Or is QEMU 11 going to be available for testing soon in any of the pve repos?
Click to expand...

It’s not quite ready for general use yet, but if you want to test how it works, it’s already available with certain flags.

Code: 
cpu: max,hidden=1,flags=+pdpe1gb
args: -cpu max,migratable=off

U

Post in thread 'High VM-EXIT and Host CPU usage on idle with Windows Server 2025'

I haven’t tested it in a test environment yet, but I have confirmed that the flag is recognized on Windows by adding the kernel.

proxmox-kernel-7.0.0-2-pve-signed: 7.0.0-2

Code: 
PS C:\Users\admin> (Get-CimInstance -ClassName Win32_DeviceGuard -Namespace root\Microsoft\Windows\DeviceGuard).AvailableSecurityProperties
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PS C:\Users\admin>

proxmox-kernel-7.0.0-3-pve-signed: 7.0.0-3

Code: 
PS C:\Users\admin> (Get-CimInstance -ClassName Win32_DeviceGuard -Namespace root\Microsoft\Windows\DeviceGuard).AvailableSecurityProperties
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7 <- MBEC/GMET is available.
PS...
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* I can't say for sure if it's perfect, but the lag disappears when HVCI is enabled.
Naturally, a compatible CPU is required; it won’t run on outdated models like the Xeon E5 v4.
 
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