diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kvm/gaccess.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/s390/kvm/gaccess.h b/arch/s390/kvm/gaccess.h index 4703f129e95e..84d01dd7a8e4 100644 --- a/arch/s390/kvm/gaccess.h +++ b/arch/s390/kvm/gaccess.h @@ -22,13 +22,16 @@ static inline void __user *__guestaddr_to_user(struct kvm_vcpu *vcpu, unsigned long guestaddr) { unsigned long prefix = vcpu->arch.sie_block->prefix; + unsigned long uaddress; if (guestaddr < 2 * PAGE_SIZE) guestaddr += prefix; else if ((guestaddr >= prefix) && (guestaddr < prefix + 2 * PAGE_SIZE)) guestaddr -= prefix; - - return (void __user *) gmap_fault(guestaddr, vcpu->arch.gmap); + uaddress = gmap_fault(guestaddr, vcpu->arch.gmap); + if (IS_ERR_VALUE(uaddress)) + uaddress = -EFAULT; + return (void __user *)uaddress; } static inline int get_guest_u64(struct kvm_vcpu *vcpu, unsigned long guestaddr, |