Performing the verification on Jammy.
1) Unit test verification
First, making sure that we can reproduce the problem.
# apt policy qemu-system-x86
qemu-system-x86:
Installed: 1:6.2+dfsg-2ubuntu6.19
Candidate: 1:6.2+dfsg-2ubuntu6.19
Version table:
*** 1:6.2+dfsg-2ubuntu6.19 500
500 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages
100 /var/lib/dpkg/status
1:6.2+dfsg-2ubuntu6.16 500
500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages
1:6.2+dfsg-2ubuntu6 500
500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages
Booting from ROM..enabling apic^M
smp: waiting for 0 APs^M
rdtsc = 311924236^M
rdtsc = 312962416^M
rdtsc = 314029548^M
rdtsc = 315083088^M
rdtsc = 316153232^M
... system_reset issued here ...
Booting from ROM..enabling apic^M
smp: waiting for 0 APs^M
rdtsc = 14001762132^M
rdtsc = 14002862272^M
rdtsc = 14004006064^M
rdtsc = 14005093708^M
rdtsc = 14006248040^M
We can see that the value of rdtsc increased after the system_reset,
which is the issue we want to fix.
Now, verifying that the new QEMU fixes the problem.
# apt policy qemu-system-x86
qemu-system-x86:
Installed: 1:6.2+dfsg-2ubuntu6.20
Candidate: 1:6.2+dfsg-2ubuntu6.20
Version table:
*** 1:6.2+dfsg-2ubuntu6.20 500
500 http://archive.ubuntu.com/ubuntu jammy-proposed/main amd64 Packages
100 /var/lib/dpkg/status
1:6.2+dfsg-2ubuntu6.19 500
500 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages
1:6.2+dfsg-2ubuntu6.16 500
500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages
1:6.2+dfsg-2ubuntu6 500
500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages
Booting from ROM..enabling apic^M
smp: waiting for 0 APs^M
rdtsc = 322897852^M
rdtsc = 324612970^M
rdtsc = 326347882^M
rdtsc = 328061272^M
rdtsc = 329828278^M
... system_reset issued here ...
Booting from ROM..enabling apic^M
smp: waiting for 0 APs^M
rdtsc = 231401932^M
rdtsc = 232646796^M
rdtsc = 233860396^M
rdtsc = 235070448^M
rdtsc = 236306912^M
We can see that rdtsc is now lower than it was after system_reset is
issued.
2) Boot verification
Tested that the new QEMU properly boots *and* reboots an Ubuntu cloud
image.
This concludes the verification for Jammy.
** Tags removed: verification-needed verification-needed-jammy
** Tags added: verification-done verification-done-jammy
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https://bugs.launchpad.net/bugs/2064914
Title:
Windows guest hangs after reboot from the guest OS
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