KVM: s390: convert handle_store_prefix()

Convert handle_store_prefix() to new guest access functions.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 9648504d7818..306caa27b962 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -106,6 +106,7 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
 {
         u64 operand2;
         u32 address;
+        int rc;
 
         vcpu->stat.instruction_stpx++;
 
@@ -122,8 +123,9 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
         address = address & 0x7fffe000u;
 
         /* get the value */
-        if (put_guest(vcpu, address, (u32 __user *)operand2))
-                return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+        rc = write_guest(vcpu, operand2, &address, sizeof(address));
+        if (rc)
+                return kvm_s390_inject_prog_cond(vcpu, rc);
 
         VCPU_EVENT(vcpu, 5, "storing prefix to %x", address);
         trace_kvm_s390_handle_prefix(vcpu, 0, address);