Hello,
this patch e90e51d5f01d ("KVM: VMX: clear vmx_x86_ops.sync_pir_to_irr if APICv 
is disabled") has been applied to our master-next branch of Impish tree.

commit 1b611352fd6fd42a5a672f52f5f3035d48b3cd13
Author: Paolo Bonzini <pbonz...@redhat.com>
Date:   Tue Nov 30 07:36:41 2021 -0500

    KVM: VMX: clear vmx_x86_ops.sync_pir_to_irr if APICv is disabled
    
    BugLink: https://bugs.launchpad.net/bugs/1958287
    
    [ Upstream commit e90e51d5f01d2baae5dcce280866bbb96816e978 ]
    
    There is nothing to synchronize if APICv is disabled, since neither
    other vCPUs nor assigned devices can set PIR.ON.
    
    Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
    Signed-off-by: Sasha Levin <sas...@kernel.org>
    Signed-off-by: Kamal Mostafa <ka...@canonical.com>
    Signed-off-by: Stefan Bader <stefan.ba...@canonical.com>

It should be included in 5.13.0-40.45 of SRU cycle 2022 03/21 (tracking bug 
lp:1966701)
I would suggest you to give this proposed kernel a try.

Also,
can you provide us the step to reproduce this?
I can't reproduce this on an clean Impish bare-metal system running with 
5.13.0-39-generic with our KVM smoke test (which utilize uvt-kvm to create the 
KVM instance).
It would be nice to improve the test coverage with it.
Thanks!

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1966499

Title:
  Recent 5.13 kernel has broken KVM support

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1966499/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to