qemu/s390x-protvirt-Move-STSI-data-over-SIDAD.patch

From: Janosch Frank <frankja@linux.ibm.com>
Date: Wed, 5 Feb 2020 07:02:51 -0500
Subject: s390x: protvirt: Move STSI data over SIDAD

References: bsc#1167075

For protected guests, we need to put the STSI emulation results into
the SIDA, so SIE will write them into the guest at the next entry.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
(cherry picked from commit ccce7a654911ae507c962aff5f41004a7a88fad6)
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 target/s390x/kvm.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 0e93778ed15d0e04e83eff1baccf..e0b61680ab086a5ff5875c42b7e5 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -50,6 +50,7 @@
 #include "exec/memattrs.h"
 #include "hw/s390x/s390-virtio-ccw.h"
 #include "hw/s390x/s390-virtio-hcall.h"
+#include "hw/s390x/pv.h"
 
 #ifndef DEBUG_KVM
 #define DEBUG_KVM  0
@@ -1808,7 +1809,9 @@ static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
     SysIB_322 sysib;
     int del, i;
 
-    if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
+    if (s390_is_pv()) {
+        s390_cpu_pv_mem_read(cpu, 0, &sysib, sizeof(sysib));
+    } else if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
         return;
     }
     /* Shift the stack of Extended Names to prepare for our own data */
@@ -1861,7 +1864,11 @@ static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
     /* Insert UUID */
     memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid));
 
-    s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
+    if (s390_is_pv()) {
+        s390_cpu_pv_mem_write(cpu, 0, &sysib, sizeof(sysib));
+    } else {
+        s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
+    }
 }
 
 static int handle_stsi(S390CPU *cpu)