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
hwe is not handled by the backports team, so I'm unsubscribing us.
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Title:
VMware nested under KVM stopped working on 5.19 kernel
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=f22ef199e0d6128350b3f19b3cf3142d0a8e582a
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So what's the current status with this bug? Is it now fixed in 6.8rc1
kernel and above? Any older kernel has to be patched?
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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
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
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
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
> 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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Can confirm, bug occurs with my setup too:
Host: Centos 9 Stream (5.14.0-352.el9.x86_64)
Hypervisor: KVM (Openstack)
VM: ESXi 7.0u3
Patching the commit @lindt found, and recompiling a custom kernel
allowed me to start a VM in an ESXi VM nested in Openstack.
Be aware I needed to delete the
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
Sorry for the noob question but how do I compile the custom kernel?
What is the fix please?
Any help would be greatly appreciated.
Thank you.
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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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Hi, I’ve got the exact same problem on an AMD Epyc 7763.
Can do a nested ESXi 7.0+ (and start VMs on top of it) with kernel 5.15.
No longer works with kernel 6.2 (haven’t tried with 5.19).
Can’t even virtualize ESXi 8.0: this host supports AMD-V, but the AMD-V
implementation is incompatible
I
Hi,
Does anyone knows if there is already a fix for this?
I have have same problem with kernel 6.2 with AMD EPYC 7313P CPU.
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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
Hi Everyone!
Found the same bug on my system:
Host: Ubuntu 22.04.02, kernel 5.15, Ryzen 5950x
Hypervisor: KVM
VM: ESXi 7.0u3
ESXi works fine and I'm able to start VMs on it (nested virtualization)
After updating the kernel to 5.19 or 6.0-oem I get this error anytime I try to
start a VM on the
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
VMware nested under KVM stopped working on 5.19
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