On Fri, 2024-08-02 at 15:44 +, Michael Kelley wrote:
> Did a basic smoke test of this two-patch series on a Hyper-V Gen 1
> VM and on a Gen 2 VM. All looks good and behaves as expected.
>
> On the Gen 1 VM, the PIT is used briefly at boot (takes ~35 interrupts)
> before the Hyper-V synthetic t
From: David Woodhouse Sent: Friday, August 2, 2024 6:56 AM
>
> Leaving the PIT interrupt running can cause noticeable steal time for
> virtual guests. The VMM generally has a timer which toggles the IRQ input
> to the PIC and I/O APIC, which takes CPU time away from the guest. Even
> on real hard
From: David Woodhouse
Leaving the PIT interrupt running can cause noticeable steal time for
virtual guests. The VMM generally has a timer which toggles the IRQ input
to the PIC and I/O APIC, which takes CPU time away from the guest. Even
on real hardware, running the counter may use power needles
