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-rw-r--r--arch/s390/kvm/priv.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 1be578d64dfc..bdd9b5b17e03 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -337,19 +337,24 @@ static int handle_io_inst(struct kvm_vcpu *vcpu)
static int handle_stfl(struct kvm_vcpu *vcpu)
{
int rc;
+ unsigned int fac;
vcpu->stat.instruction_stfl++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+ /*
+ * We need to shift the lower 32 facility bits (bit 0-31) from a u64
+ * into a u32 memory representation. They will remain bits 0-31.
+ */
+ fac = *vcpu->kvm->arch.model.fac->sie >> 32;
rc = write_guest_lc(vcpu, offsetof(struct _lowcore, stfl_fac_list),
- vfacilities, 4);
+ &fac, sizeof(fac));
if (rc)
return rc;
- VCPU_EVENT(vcpu, 5, "store facility list value %x",
- *(unsigned int *) vfacilities);
- trace_kvm_s390_handle_stfl(vcpu, *(unsigned int *) vfacilities);
+ VCPU_EVENT(vcpu, 5, "store facility list value %x", fac);
+ trace_kvm_s390_handle_stfl(vcpu, fac);
return 0;
}