Doorbell emulation for nested KVM guests in V1 API is broken because of 2 reasons: 1. L0 presenting H_EMUL_ASSIST to L1 instead of H_FAC_UNAVAIL 2. Broken plumbing for passing around doorbell state. Fix the trap passed to L1 and the plumbing for maintaining doorbell state. Gautam Menghani (2): Revert "KVM: PPC: Book3S HV Nested: Stop forwarding all HFUs to L1" arch/powerpc/kvm: Fix doorbells for nested KVM guests on PowerNV arch/powerpc/kvm/book3s_hv.c | 40 ++++++++--------------------- arch/powerpc/kvm/book3s_hv_nested.c | 20 ++++++++++++--- 2 files changed, 26 insertions(+), 34 deletions(-) -- 2.45.1
