File s390x-protvirt-Set-guest-IPL-PSW.patch of Package qemu.18959

From: Janosch Frank <frankja@linux.ibm.com>
Date: Tue, 23 Jul 2019 13:17:32 +0200
Subject: s390x: protvirt: Set guest IPL PSW

References: bsc#1167075

Handling of CPU reset and setting of the IPL psw from guest storage at
offset 0 is done by a Ultravisor call. Let's only fetch it if
necessary.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
(cherry picked from commit e8686d9849f1625f4f4b28403f0555181b72d1b6)
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 target/s390x/cpu.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 479f1978c974722ceeb72ac5fb32..6da0c3f15530310fba5f609b8c7f 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -77,8 +77,16 @@ static bool s390_cpu_has_work(CPUState *cs)
 static void s390_cpu_load_normal(CPUState *s)
 {
     S390CPU *cpu = S390_CPU(s);
-    cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR;
-    cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64;
+    if (!s390_is_pv()) {
+        cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR;
+        cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64;
+    } else {
+        /*
+         * Firmware requires us to set the load state before we set
+         * the cpu to operating on protected guests.
+         */
+        s390_cpu_set_state(S390_CPU_STATE_LOAD, cpu);
+    }
     s390_cpu_set_state(S390_CPU_STATE_OPERATING, cpu);
 }
 #endif