Revert "svm: Add warning message for AVIC IPI invalid target"

Remove a WARN on an "AVIC IPI invalid target" exit, the WARN is trivial
to trigger from guest as it will fail on any destination APIC ID that
doesn't exist from the guest's perspective.

Don't bother recording anything in the kernel log, the common tracepoint
for kvm_avic_incomplete_ipi() is sufficient for debugging.

This reverts commit 37ef0c4.

Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220204214205.3306634-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Author: sean-jc

arch/x86/kvm/svm/avic.c

@@ -345,8 +345,6 @@ int avic_incomplete_ipi_interception(struct kvm_vcpu *vcpu)
 		avic_kick_target_vcpus(vcpu->kvm, apic, icrl, icrh);
 		break;
 	case AVIC_IPI_FAILURE_INVALID_TARGET:
-		WARN_ONCE(1, "Invalid IPI target: index=%u, vcpu=%d, icr=%#0x:%#0x\n",
-			  index, vcpu->vcpu_id, icrh, icrl);
 		break;
 	case AVIC_IPI_FAILURE_INVALID_BACKING_PAGE:
 		WARN_ONCE(1, "Invalid backing page\n");