diff options
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 5dddd7817905..251059ff81fc 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -5011,7 +5011,14 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm, struct kvm_memory_slot *new, enum kvm_mr_change change) { - gpa_t size = new->npages * PAGE_SIZE; + gpa_t size; + + /* When we are protected, we should not change the memory slots */ + if (kvm_s390_pv_get_handle(kvm)) + return -EINVAL; + + if (change == KVM_MR_DELETE || change == KVM_MR_FLAGS_ONLY) + return 0; /* A few sanity checks. We can have memory slots which have to be located/ended at a segment boundary (1MB). The memory in userland is @@ -5021,15 +5028,13 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm, if (new->userspace_addr & 0xffffful) return -EINVAL; + size = new->npages * PAGE_SIZE; if (size & 0xffffful) return -EINVAL; if ((new->base_gfn * PAGE_SIZE) + size > kvm->arch.mem_limit) return -EINVAL; - /* When we are protected, we should not change the memory slots */ - if (kvm_s390_pv_get_handle(kvm)) - return -EINVAL; return 0; } |