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Commit 10ce32d5 authored by David Hildenbrand's avatar David Hildenbrand Committed by Christian Borntraeger
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KVM: s390: always set/clear the SCA sda field 



Let's always set and clear the sda when enabling/disabling a VCPU.
Dealing with sda being set to something else makes no sense anymore
as we enable a VCPU in the SCA now after it has been registered at
the VM.

Signed-off-by: default avatarDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 25508824

arch/s390/kvm/kvm-s390.c

+4 −8
Original line number Diff line number Diff line
@@ -1266,13 +1266,11 @@ static void sca_del_vcpu(struct kvm_vcpu *vcpu) 
		struct esca_block *sca = vcpu->kvm->arch.sca;



		clear_bit_inv(vcpu->vcpu_id, (unsigned long *) sca->mcn);

		if (sca->cpu[vcpu->vcpu_id].sda == (__u64) vcpu->arch.sie_block)

		sca->cpu[vcpu->vcpu_id].sda = 0;

	} else {

		struct bsca_block *sca = vcpu->kvm->arch.sca;



		clear_bit_inv(vcpu->vcpu_id, (unsigned long *) &sca->mcn);

		if (sca->cpu[vcpu->vcpu_id].sda == (__u64) vcpu->arch.sie_block)

		sca->cpu[vcpu->vcpu_id].sda = 0;

	}

	read_unlock(&vcpu->kvm->arch.sca_lock);
@@ -1285,7 +1283,6 @@ static void sca_add_vcpu(struct kvm_vcpu *vcpu, struct kvm *kvm, 
	if (kvm->arch.use_esca) {

		struct esca_block *sca = kvm->arch.sca;



		if (!sca->cpu[id].sda)

		sca->cpu[id].sda = (__u64) vcpu->arch.sie_block;

		vcpu->arch.sie_block->scaoh = (__u32)(((__u64)sca) >> 32);

		vcpu->arch.sie_block->scaol = (__u32)(__u64)sca & ~0x3fU;
@@ -1294,7 +1291,6 @@ static void sca_add_vcpu(struct kvm_vcpu *vcpu, struct kvm *kvm, 
	} else {

		struct bsca_block *sca = kvm->arch.sca;



		if (!sca->cpu[id].sda)

		sca->cpu[id].sda = (__u64) vcpu->arch.sie_block;

		vcpu->arch.sie_block->scaoh = (__u32)(((__u64)sca) >> 32);

		vcpu->arch.sie_block->scaol = (__u32)(__u64)sca;