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Commit bdab09f3 authored by David Hildenbrand's avatar David Hildenbrand Committed by Christian Borntraeger
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KVM: s390: enable host-protection-interruption only with ESOP 



host-protection-interruption control was introduced with ESOP. So let's
enable it only if we have ESOP and add an explanatory comment why
we can live without it.

Reviewed-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: default avatarDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 09a400e7

arch/s390/kvm/kvm-s390.c

+3 −1
Original line number Diff line number Diff line
@@ -1837,7 +1837,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) 


	kvm_s390_vcpu_setup_model(vcpu);



	vcpu->arch.sie_block->ecb = 0x02;

	/* pgste_set_pte has special handling for !MACHINE_HAS_ESOP */

	if (MACHINE_HAS_ESOP)

		vcpu->arch.sie_block->ecb |= 0x02;

	if (test_kvm_facility(vcpu->kvm, 9))

		vcpu->arch.sie_block->ecb |= 0x04;

	if (test_kvm_facility(vcpu->kvm, 50) && test_kvm_facility(vcpu->kvm, 73))