On 2018-01-23 12:21 PM, Stefan Hajnoczi wrote: > On Fri, Jan 19, 2018 at 03:03:25PM -0500, Genevieve Bastien wrote: >> I'm tracing kvm guests and their host and an issue we have is to >> identify which host process corresponds to which guest trace so we can >> follow the state of the virtual cpu on the host. > There are uevents for the VM lifecycle that include the PID. Please see > Linux commit 286de8f6ac9202f1c9012784639156c6ec386eb8 & > fdeaf7e3eb37c6dbc4b4ac97dbe1945d239eb788. > > Did you check if these are appropriate for your use case? Thanks for the hint, I didn't know about those. But the uevents are only for the host right? There is no specific value in debugfs for guest. But I'll see if I can use some udev rules to trigger <some-kvm-tracing-script> to achieve what I need. Thanks, Geneviève
