[S390] kvm: make sigp emerg smp capable

SIGP emerg needs to pass the source vpu adress into __LC_CPU_ADDRESS of the
target guest.

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 35c21bf910c5..c9aeb4b4d0b8 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -128,6 +128,10 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
                 if (rc == -EFAULT)
                         exception = 1;
 
+                rc = put_guest_u16(vcpu, __LC_CPU_ADDRESS, inti->emerg.code);
+                if (rc == -EFAULT)
+                        exception = 1;
+
                 rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
                          &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
                 if (rc == -EFAULT)