Re: [PATCH 0/6] KVM: PPC: Book3S HV interrupt fixes

On Thu, 3 Mar 2022 15:33:09 +1000, Nicholas Piggin wrote:

This series fixes up a bunch of little interrupt issues which were found
by inspection haven't seem to have caused big problems but possibly
could or could cause the occasional latency spike from a temporarily lost
interrupt.

The big thing is the xive context change. Currently we run an L2 with
its L1's xive OS context pushed. I'm proposing that we instead treat
that as an escalation similar to cede.

[...]

Patches 2-6 applied to powerpc/topic/ppc-kvm.

[2/6] KVM: PPC: Book3S HV P9: Inject pending xive interrupts at guest entry
      https://git.kernel.org/powerpc/c/026728dc5d41f830e8194fe01e432dd4eb9b3d9a
[3/6] KVM: PPC: Book3S HV P9: Move cede logic out of XIVE escalation rearming
      https://git.kernel.org/powerpc/c/ad5ace91c55e7bd16813617f67bcb7619d51a295
[4/6] KVM: PPC: Book3S HV P9: Split !nested case out from guest entry
      https://git.kernel.org/powerpc/c/42b4a2b347b09e7ee4c86f7121e3b45214b63e69
[5/6] KVM: PPC: Book3S HV Nested: L2 must not run with L1 xive context
      https://git.kernel.org/powerpc/c/11681b79b1ab52e7625844d7ce52c4d5201a43b2
[6/6] KVM: PPC: Book3S HV Nested: L2 LPCR should inherit L1 LPES setting
      https://git.kernel.org/powerpc/c/2852ebfa10afdcefff35ec72c8da97141df9845c

cheers