Ubuntu
linux package

  1. Bug #2020319
  2. Comment #4

Comment 4 for bug 2020319

Revision history for this message
Fabio Augusto Miranda Martins (fabio.martins) wrote :

I've verified a Jammy guest as follows:

1. Reproduced the problem with kernel 5.15.0-75-generic:

https://pastebin.ubuntu.com/p/844W5SzjR8/

2. As a workaround removed:

  <launchSecurity type="sev">
    <policy>0x0003</policy>
  </launchSecurity>

3. Installed kernel from -proposed:

root@ubuntu:~# apt-cache policy linux-image-virtual linux-virtual
linux-image-virtual:
  Installed: 5.15.0.77.75
  Candidate: 5.15.0.77.75
  Version table:
 *** 5.15.0.77.75 500
        500 http://archive.ubuntu.com/ubuntu jammy-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     5.15.0.75.73 500
        500 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages
     5.15.0.25.27 500
        500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages
linux-virtual:
  Installed: 5.15.0.77.75
  Candidate: 5.15.0.77.75
  Version table:
 *** 5.15.0.77.75 500
        500 http://archive.ubuntu.com/ubuntu jammy-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     5.15.0.75.73 500
        500 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages
     5.15.0.25.27 500
        500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages

4. Added back:

  <launchSecurity type="sev">
    <policy>0x0003</policy>
  </launchSecurity>

5. Instance booted fine:

ubuntu@ubuntu:~$ uname -a
Linux ubuntu 5.15.0-77-generic #84-Ubuntu SMP Fri Jun 16 16:16:44 UTC 2023 x86_6
4 x86_64 x86_64 GNU/Linux
ubuntu@ubuntu:~$ sudo dmesg | grep -i sev
[ 0.217323] AMD Memory Encryption Features active: SEV
[ 5.296555] SVM: KVM is unsupported when running as an SEV guest

6. Full dmesg: https://paste.ubuntu.com/p/5MDcKbVzPv/