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Date: Fri, 12 Jul 2024 13:14:16 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: Sean Christopherson <seanjc@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>, Mathieu Desnoyers
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 himadrics@inria.fr, kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
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Subject: Re: [RFC PATCH v2 0/5] Paravirt Scheduling (Dynamic vcpu priority
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On Fri, 12 Jul 2024 10:08:43 -0700
Sean Christopherson <seanjc@google.com> wrote:

> > I am a bit confused by your statement Sean, because if a higher prio HOST
> > thread wakes up on the vCPU thread's phyiscal CPU, then a VM-Exit should
> > happen. That has nothing to do with IRQ delivery.  What am I missing?  
> 
> Why does that require hooking VM-Exit?

To do the lazy boosting. That's the time that the host can see the
priority of the currently running task.

-- Steve