Re: [Qemu-devel] [Qemu-discuss] Handling signal of Qemu thread

2018-08-20 Thread Probir Roy
> What exactly are you trying to do > with your new signal ? I am implementing PEBS (Intel's Precise-Event Based Sampling) virtualization, so that I can sample guest OS from host machine using Linux Perf. The PEBS device is configured from host's user space as perf event. I am registering a perf-e

[Qemu-devel] Handling signal of Qemu thread

2018-08-16 Thread Probir Roy
I am registering a signal handler per Qemu thread (per VCPU) and expecting to handle it in that thread context. But I never receive the signal on the Qemu thread that is causing the event, rather the signal is sent to parent thread context. Can you please explain the reason behind this? I also see

Re: [Qemu-devel] [Qemu-discuss] IRQ per CPU

2018-07-05 Thread Probir Roy
> Does 'per CPU basis' indicates irq per cpu, or irq per device queue? IRQ per CPU core, meaning that IRQ will be raised at and served by that CPU. Does IRQ per queue mean the same thing?