backported to jammy, should be in the next kernel release
6.5.0-34.34~22.04.2
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Title:
VMware nested under KVM stopped working on 5.
it was finally backported to mantic. Waiting for jammy's hwe-6.5 now.
https://git.launchpad.net/~ubuntu-
kernel/ubuntu/+source/linux/+git/mantic/commit/?h=master-
next&id=f22ef199e0d6128350b3f19b3cf3142d0a8e582a
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Also backported to 6.1.76
Can we get it into Mantic kernel?
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Title:
VMware nested under KVM stopped working on 5.19 kernel on Ryzen
Backported to Linux 6.7.2 and Linux 6.6.14
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Title:
VMware nested under KVM stopped working on 5.19 kernel on Ryzen:
Invalid VMCB.
The patch is in 6.8-rc1, how can we make Canonical to cherry-pick that
patch into current 6.5 kernel?
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Title:
VMware nested under K
It will be fixed in kernel 6.8
Let's hope for backports to -stable
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Title:
VMware nested under KVM stopped working on 5.19 kernel o
> Applied to kvm-x86 svm, with a comment as suggested by Maxim.
> [1/2] Revert "nSVM: Check for reserved encodings of TLB_CONTROL in nested
> VMCB"
> https://github.com/kvm-x86/linux/commit/a484755ab252
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Google is your friend. The commit you should revert is specified
earlier.
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Title:
VMware nested under KVM stopped working on 5.19 k
For now you can only compile the custom kernel to fix it.
Discussion in kvm mail list on this issue died out with no result so far.
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T
you can check it with bpftrace on kernel 5.19.0-41-generic #42~22.04.1-Ubuntu:
sudo bpftrace -e 'kprobe:__nested_vmcb_check_controls { printf("tlb_ctl: %d\n",
*((uint8 *)arg1+60) )}'
and it ends like this:
...
tlb_ctl: 1
tlb_ctl: 0
tlb_ctl: 0
tlb_ctl: 0
tlb_ctl: 0
tlb_ctl: 0
tlb_ctl: 0
tlb_ctl: 0
ok, found the culprit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=174a921b6975ef959dd82ee9e8844067a62e3ec1
"nSVM: Check for reserved encodings of TLB_CONTROL in nested VMCB"
I'll email author to revert it or fix this.
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Ok, I've checked mainline ubuntu kernels as of today:
WORKS 5.15.110
linux-image-unsigned-5.15.110-0515110-generic_5.15.110-0515110.202304302037_amd64.deb
BROKEN 5.16rc1
linux-image-unsigned-5.16.0-051600rc1-generic_5.16.0-051600rc1.20242330_amd64.deb
so rc1 changes of 5.16 broke something h
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
VMware nested under KVM stopped working on 5.19 kernel
Public bug reported:
My setup:
Host: Ubuntu Linux 22.04.1, kernel 5.15, Ryzen 5900x
Hypervisor: KVM
Windows VM with VMware Workstation 16
Running nested VMs in VMware works ok.
It fails if Linux host kernel is updated to 5.19 (22.04.2) with
MONITOR PANIC: Invalid VMCB.
VMware Workstation unrec
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