Hi,
On Fri, Oct 21, 2022 at 12:28:23AM +0000, Salil Mehta wrote:
Hi James, It totally skipped my mind earlier to mention that apart from what I have already shared through the below repositories, and as discussed in early September on LOD, I have also been experimenting with another approach (nothing new but something similar and based on yours and JPBs suggestion) for VCPU Hotplug. It is a non-ACPI version and banks upon trapping KVM Host PSCI to user space (i.e. CPU_ON, CPU_OFF etc.) to let QEMU make the decisions i.e. whether CPUs could be made online or not.
This is fine if the guest hasn't already brought the vCPU online, but if it has, blocking CPU_ON doesn't prevent the guest continuing to use the vCPU. How would that aspect be addressed with your approach?
Thanks.