Re: [PATCH v3] KVM: PPC: Tick accounting should defer vtime accounting 'til after IRQ handling
From: Michael Ellerman <hidden>
Date: 2021-11-02 11:39:35
Also in:
stable
On Thu, 28 Oct 2021 00:21:50 +1000, Nicholas Piggin wrote:
From: Laurent Vivier <redacted>
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