Fedora sees only 1 CPU core after updating the kernel to 6.9.x

[tempmail]

@apparatus

What if you specify the number of VCPUs assigned to dom0 for Xen? Will you have all your cores in dom0?
Try to add dom0_max_vcpus=16 or dom0_max_vcpus=16- to GRUB_CMDLINE_XEN_DEFAULT in /etc/default/grub and rebuild GRUB config.

Tried, but no luck.

Meanwhile…

Fedora sees only 1 CPU core after updating the kernel from 6.8.x to 6.9.x

I hate to restart it now, but I’ll try it in a few days.

[marmarek]

And from the above topic, the bug report URL: 2295026 – 6.8 kernel see all cpus, 6.9 only sees 1 cpu

[tempmail]

Probably late update, but just in case.
Kernel 6.9.2.x sees all CPU cores too.