Hello all, I have a need to record all IPIs that are sent and received between cores in a multi-core guest. Specifically, I have a need to record the source CPU ID and the destination CPU ID of such interrupts. I am using KVM with QEMU and I did read about "hypercalls", but I'm not sure if IPIs are sent that way. I tried putting debug statements in the host kernel at "kvm_emulate_hypercall" but I didn't get any requisite logs. I am using Linux Kernel 5.8.0 on the host. I am using QEMU version 5.0.1. My target and host architecture is x86_64. The command line I use to start QEMU is as below - sudo ./qemu-system-x86_64 -m 1024 --machine pc-i440fx-2.5 -cpu qemu64,-kvmclock, -kvm_pv_eoi,+kvm_pv_ipi -smp 2 -enable-kvm -netdev tap,id=tap1,ifname=tap0,script=no,downscript=no -device virtio-net-pci,netdev=tap1,mac=00:00:00:00:00:00 -drive file=~/os_images_for_qemu/ubuntu-16.04.server.qcow2,format=qcow2,if=none,id=img-direct -device virtio-blk-pci,drive=img-direct Is there a way to intercept IPIs in a multi-core guest ? I would like to cause a VMEXIT in the guest when an IPI is sent so I could record all the information I need. Thank you very much. Best Regards, Arnabjyoti Kalita
