From c6c956b80bdf151cf41d3e7e5c54755d930a212c Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Tue, 1 Jul 2014 14:36:04 +0200 Subject: KVM: s390/mm: support gmap page tables with less than 5 levels Add an addressing limit to the gmap address spaces and only allocate the page table levels that are needed for the given limit. The limit is fixed and can not be changed after a gmap has been created. Signed-off-by: Martin Schwidefsky Signed-off-by: Christian Borntraeger --- arch/s390/kvm/kvm-s390.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/s390/kvm') diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 543c24baf1eb..82065dc7948d 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -451,7 +451,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) if (type & KVM_VM_S390_UCONTROL) { kvm->arch.gmap = NULL; } else { - kvm->arch.gmap = gmap_alloc(current->mm); + kvm->arch.gmap = gmap_alloc(current->mm, -1UL); if (!kvm->arch.gmap) goto out_nogmap; kvm->arch.gmap->private = kvm; @@ -535,7 +535,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; kvm_clear_async_pf_completion_queue(vcpu); if (kvm_is_ucontrol(vcpu->kvm)) { - vcpu->arch.gmap = gmap_alloc(current->mm); + vcpu->arch.gmap = gmap_alloc(current->mm, -1UL); if (!vcpu->arch.gmap) return -ENOMEM; vcpu->arch.gmap->private = vcpu->kvm; -- cgit v1.2.1