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From d738b4336c79be68b6040f73427e089f46957728 Mon Sep 17 00:00:00 2001
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From: Thomas Huth <thuth@redhat.com>
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Date: Fri, 29 May 2020 05:54:11 -0400
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Subject: [PATCH 29/42] s390x: protvirt: Set guest IPL PSW
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RH-Author: Thomas Huth <thuth@redhat.com>
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Message-id: <20200529055420.16855-30-thuth@redhat.com>
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Patchwork-id: 97049
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O-Subject: [RHEL-8.3.0 qemu-kvm PATCH v2 29/38] s390x: protvirt: Set guest IPL PSW
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Bugzilla: 1828317
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RH-Acked-by: Claudio Imbrenda <cimbrend@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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From: Janosch Frank <frankja@linux.ibm.com>
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Handling of CPU reset and setting of the IPL psw from guest storage at
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offset 0 is done by a Ultravisor call. Let's only fetch it if
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necessary.
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Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
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Reviewed-by: Thomas Huth <thuth@redhat.com>
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Reviewed-by: David Hildenbrand <david@redhat.com>
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Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
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Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
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Reviewed-by: Cornelia Huck <cohuck@redhat.com>
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Message-Id: <20200319131921.2367-11-frankja@linux.ibm.com>
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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(cherry picked from commit 59181010a2ff82c3a97e9b5768ee87c38e4815f1)
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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target/s390x/cpu.c | 26 +++++++++++++++++---------
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1 file changed, 17 insertions(+), 9 deletions(-)
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diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
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index 8f38cd8e6f..371b91b2d7 100644
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--- a/target/s390x/cpu.c
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+++ b/target/s390x/cpu.c
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@@ -77,16 +77,24 @@ static bool s390_cpu_has_work(CPUState *cs)
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static void s390_cpu_load_normal(CPUState *s)
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{
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S390CPU *cpu = S390_CPU(s);
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- uint64_t spsw = ldq_phys(s->as, 0);
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-
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- cpu->env.psw.mask = spsw & PSW_MASK_SHORT_CTRL;
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- /*
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- * Invert short psw indication, so SIE will report a specification
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- * exception if it was not set.
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- */
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- cpu->env.psw.mask ^= PSW_MASK_SHORTPSW;
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- cpu->env.psw.addr = spsw & PSW_MASK_SHORT_ADDR;
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+ uint64_t spsw;
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+ if (!s390_is_pv()) {
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+ spsw = ldq_phys(s->as, 0);
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+ cpu->env.psw.mask = spsw & PSW_MASK_SHORT_CTRL;
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+ /*
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+ * Invert short psw indication, so SIE will report a specification
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+ * exception if it was not set.
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+ */
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+ cpu->env.psw.mask ^= PSW_MASK_SHORTPSW;
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+ cpu->env.psw.addr = spsw & PSW_MASK_SHORT_ADDR;
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+ } else {
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+ /*
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+ * Firmware requires us to set the load state before we set
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+ * the cpu to operating on protected guests.
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+ */
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+ s390_cpu_set_state(S390_CPU_STATE_LOAD, cpu);
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+ }
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s390_cpu_set_state(S390_CPU_STATE_OPERATING, cpu);
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}
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#endif
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--
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2.27.0
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