qemu-kvm/SOURCES/kvm-s390x-protvirt-Set-guest-IPL-PSW.patch

76 lines
2.6 KiB
Diff

From d738b4336c79be68b6040f73427e089f46957728 Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Fri, 29 May 2020 05:54:11 -0400
Subject: [PATCH 29/42] s390x: protvirt: Set guest IPL PSW
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20200529055420.16855-30-thuth@redhat.com>
Patchwork-id: 97049
O-Subject: [RHEL-8.3.0 qemu-kvm PATCH v2 29/38] s390x: protvirt: Set guest IPL PSW
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>
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>
Message-Id: <20200319131921.2367-11-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
(cherry picked from commit 59181010a2ff82c3a97e9b5768ee87c38e4815f1)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
target/s390x/cpu.c | 26 +++++++++++++++++---------
1 file changed, 17 insertions(+), 9 deletions(-)
diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 8f38cd8e6f..371b91b2d7 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -77,16 +77,24 @@ static bool s390_cpu_has_work(CPUState *cs)
static void s390_cpu_load_normal(CPUState *s)
{
S390CPU *cpu = S390_CPU(s);
- uint64_t spsw = ldq_phys(s->as, 0);
-
- cpu->env.psw.mask = spsw & PSW_MASK_SHORT_CTRL;
- /*
- * Invert short psw indication, so SIE will report a specification
- * exception if it was not set.
- */
- cpu->env.psw.mask ^= PSW_MASK_SHORTPSW;
- cpu->env.psw.addr = spsw & PSW_MASK_SHORT_ADDR;
+ uint64_t spsw;
+ if (!s390_is_pv()) {
+ spsw = ldq_phys(s->as, 0);
+ cpu->env.psw.mask = spsw & PSW_MASK_SHORT_CTRL;
+ /*
+ * Invert short psw indication, so SIE will report a specification
+ * exception if it was not set.
+ */
+ cpu->env.psw.mask ^= PSW_MASK_SHORTPSW;
+ cpu->env.psw.addr = spsw & PSW_MASK_SHORT_ADDR;
+ } 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
--
2.27.0