From 27f5d8a3af2863e39b7c46a3128009988d772f15 Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Fri, 29 May 2020 05:54:09 -0400
Subject: [PATCH 27/42] s390x: protvirt: Move STSI data over SIDAD

RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20200529055420.16855-28-thuth@redhat.com>
Patchwork-id: 97046
O-Subject: [RHEL-8.3.0 qemu-kvm PATCH v2 27/38] s390x: protvirt: Move STSI data over SIDAD
Bugzilla: 1828317
RH-Acked-by: Claudio Imbrenda <cimbrend@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>

From: Janosch Frank <frankja@linux.ibm.com>

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>
Message-Id: <20200319131921.2367-9-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
(cherry picked from commit 7c713b8acb70fb61f9650f8a7702dec546752bb6)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.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 f67bb5ce2c..6809a5ac40 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
@@ -1803,7 +1804,9 @@ static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
     SysIB_322 sysib;
     int del;
 
-    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 */
@@ -1843,7 +1846,11 @@ 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)
-- 
2.27.0