[PATCH 1/5] KVM: PPC: Book3S HV P9: Clear vcpu cpu fields before enabling host irqs

Michael Ellerman patch-notifications at ellerman.id.au
Wed Oct 5 11:15:26 AEDT 2022


On Thu, 8 Sep 2022 23:25:41 +1000, Nicholas Piggin wrote:
> On guest entry, vcpu->cpu and vcpu->arch.thread_cpu are set after
> disabling host irqs. On guest exit there is a window whre tick time
> accounting briefly enables irqs before these fields are cleared.
> 
> Move them up to ensure they are cleared before host irqs are run.
> This is possibly not a problem, but is more symmetric and makes the
> fields less surprising.
> 
> [...]

Patches 1-4 applied to powerpc/topic/ppc-kvm.

[1/5] KVM: PPC: Book3S HV P9: Clear vcpu cpu fields before enabling host irqs
      https://git.kernel.org/powerpc/c/bc91c04bfff7cdf676011b97bb21b2861d7b21c9
[2/5] KVM: PPC: Book3S HV P9: Fix irq disabling in tick accounting
      https://git.kernel.org/powerpc/c/c953f7500b65f2b157d1eb468ca8b86328834cce
[3/5] KVM: PPC: Book3S HV: Update guest state entry/exit accounting to new API
      https://git.kernel.org/powerpc/c/b31bc24a49037aad7aa00d2b0354e9704d8134dc
[4/5] KVM: PPC: Book3S HV P9: Restore stolen time logging in dtl
      https://git.kernel.org/powerpc/c/1a5486b3c3517aa1f608a10003ade4da122cb175

cheers


More information about the Linuxppc-dev mailing list