Performing the verification on Jammy.
First, verifying that we can reproduce the problem.
# apt policy qemu-system-x86
qemu-system-x86:
Installed: 1:6.2+dfsg-2ubuntu6.18
Candidate: 1:6.2+dfsg-2ubuntu6.18
Version table:
*** 1:6.2+dfsg-2ubuntu6.18 500
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
# qemu-system-x86_64 -M pc-q35-jammy,accel=kvm,kernel-irqchip=split -device
intel-iommu,intremap=on -smp cpus=300,maxcpus=300 -enable-kvm -net none -m
4096M -nographic -kernel /boot/vmlinuz -initrd /boot/initrd.img -chardev
stdio,mux=on,id=char0 -mon chardev=char0,mode=readline -serial chardev:char0
-append "console=ttyS0"
qemu-system-x86_64: Invalid SMP CPUs 300. The max CPUs supported by machine
'pc-q35-jammy' is 288
Now, updating the package and verifying that the version from -proposed
fixes the issue:
# 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-proposed/main amd64 Packages
100 /var/lib/dpkg/status
1:6.2+dfsg-2ubuntu6.18 500
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
# qemu-system-x86_64 -M pc-q35-jammy-maxcpus,accel=kvm,kernel-irqchip=split
-device intel-iommu,intremap=on -smp cpus=300,maxcpus=300 -enable-kvm -net none
-m 4096M -nographic -kernel /boot/vmlinuz -initrd /boot/initrd.img -chardev
stdio,mux=on,id=char0 -mon chardev=char0,mode=readline -serial chardev:char0
-append "console=ttyS0"
...
<no QEMU error>
This concludes the verification on Jammy.
** Tags removed: verification-needed verification-needed-jammy
** Tags added: verification-done verification-done-jammy
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https://bugs.launchpad.net/bugs/2012763
Title:
qemu-system-amd64 max cpus is too low for latest processors
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