Re: [PATCH v3] KVM: PPC: Tick accounting should defer vtime accounting 'til after IRQ handling

On Thu, 28 Oct 2021 00:21:50 +1000, Nicholas Piggin wrote:

From: Laurent Vivier lvivier@redhat.com

Commit 112665286d08 ("KVM: PPC: Book3S HV: Context tracking exit guest context before enabling irqs") moved guest_exit() into the interrupt protected area to avoid wrong context warning (or worse). The problem is that tick-based time accounting has not yet been updated at this point (because it depends on the timer interrupt firing), so the guest time gets incorrectly accounted to system time.

[...]

Applied to powerpc/next.

[1/1] KVM: PPC: Tick accounting should defer vtime accounting 'til after IRQ handling https://git.kernel.org/powerpc/c/235cee162459d96153d63651ce7ff51752528c96

cheers