Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [patch 2/2] x86/kvm: Sanitize kvm_async_pf_task_wait() | Date | Sat, 07 Mar 2020 21:08:56 +0100 |
| |
Andy Lutomirski <luto@kernel.org> writes: > On Sat, Mar 7, 2020 at 7:52 AM Thomas Gleixner <tglx@linutronix.de> wrote: >> WHAT? That's fundamentally broken. Can you point me to the code in >> question? > > I think Paolo said so in a different thread, but I can't Let me see if > I can find it: > > kvm_pv_enable_async_pf() > kvm_clear_async_pf_completion_queue() > > but that doesn't actually seem to send #PF. So maybe I'm wrong. > > I will admit that, even after reading the host code a few times, I'm > also not convinced that wakeups don't get swallowed on occasion if > they would have been delivered at times when it's illegal.
I gave up trying to decode it. I wait for the kvm wizards to answer all our nasty questions :)
Thanks,
tglx
| |