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KVM: PPC: Book3S HV: Initialise vcpu MSR with MSR_ME

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It is possible to create a VCPU without setting the MSR before running
it, which results in a warning in kvmhv_vcpu_entry_p9() that MSR_ME is
not set. This is pretty harmless because the MSR_ME bit is added to
HSRR1 before HRFID to guest, and a normal qemu guest doesn't hit it.

Initialise the vcpu MSR with MSR_ME set.

Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210811160134.904987-2-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2021-08-12 02:00:35 +10:00 committed by Michael Ellerman
parent 0eb596f1e6
commit fd42b7b09c
1 changed files with 1 additions and 0 deletions
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arch/powerpc/kvm/book3s_hv.c
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@ -2684,6 +2684,7 @@ static int kvmppc_core_vcpu_create_hv(struct kvm_vcpu *vcpu)
spin_lock_init(&vcpu->arch.vpa_update_lock);
spin_lock_init(&vcpu->arch.tbacct_lock);
vcpu->arch.busy_preempt = TB_NIL;
vcpu->arch.shregs.msr = MSR_ME;
vcpu->arch.intr_msr = MSR_SF | MSR_ME;
/*