eselarm Posted yesterday at 03:26 PM Share Posted yesterday at 03:26 PM qemu-system-aarch64 -M virt -cpu host -enable-kvm ... only works reliably when 1 CPU core ( -smp 1). When a VM has 2 cores, it randomly worked I experienced. If virt-manager pick 2 equal cores, VM UEFI/BIOS/kernel runs OK, but if a Cortex-A76 and Cortex-A55, all sorts of exceptions are shown or just lockup 2x or 1x 100% usage. In order to still be able to use KVM, start qemu-system-aarch64 as follows: taskset --cpu-list 4-7 qemu-system-aarch64 -M virt -cpu host -enable-kvm -smp 4 ... or taskset --cpu-list 0-3 qemu-system-aarch64 -M virt -cpu host -enable-kvm -smp 4 ... Mainline kernel 6.8.x or later does not have this problem. It can transparently use all 8 cores. Userspace is Debian Bookworm based. 0 Quote Link to comment Share on other sites More sharing options...
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