From: Nicholas Piggin Date: Wed, 11 Aug 2021 16:00:35 +0000 (+1000) Subject: KVM: PPC: Book3S HV: Initialise vcpu MSR with MSR_ME X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=fd42b7b09c602c904452c0c3e5955ca21d8e387a;p=linux.git KVM: PPC: Book3S HV: Initialise vcpu MSR with MSR_ME 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 Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210811160134.904987-2-npiggin@gmail.com --- diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 085fb8ecbf688..c402eb0276b0a 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -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; /*