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From 7171a794e8a7d91805516174187addc3b8e6b423 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 05:53:54 -0400
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Subject: [PATCH 12/42] s390x: Properly fetch and test the short psw on diag308
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subc 0/1
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RH-Author: Thomas Huth <thuth@redhat.com>
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Message-id: <20200529055420.16855-13-thuth@redhat.com>
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Patchwork-id: 97025
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O-Subject: [RHEL-8.3.0 qemu-kvm PATCH v2 12/38] s390x: Properly fetch and test the short psw on diag308 subc 0/1
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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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We need to actually fetch the cpu mask and set it. As we invert the
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short psw indication in the mask, SIE will report a specification
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exception, if it wasn't present in the reset psw.
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Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
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Reviewed-by: David Hildenbrand <david@redhat.com>
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Message-Id: <20191129142025.21453-2-frankja@linux.ibm.com>
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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(cherry picked from commit 104130cb7c106378dab944397c6a455c4a6d552f)
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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 | 12 ++++++++++--
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target/s390x/cpu.h | 1 +
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2 files changed, 11 insertions(+), 2 deletions(-)
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diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
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index 99ea09085a..625daeedd1 100644
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--- a/target/s390x/cpu.c
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+++ b/target/s390x/cpu.c
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@@ -76,8 +76,16 @@ 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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- cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR;
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- cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64;
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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 & 0xffffffff80000000ULL;
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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 & 0x7fffffffULL;
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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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diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
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index 7e1c18d596..7f5fa1d35b 100644
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--- a/target/s390x/cpu.h
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+++ b/target/s390x/cpu.h
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@@ -269,6 +269,7 @@ extern const VMStateDescription vmstate_s390_cpu;
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#define PSW_MASK_EXT 0x0100000000000000ULL
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#define PSW_MASK_KEY 0x00F0000000000000ULL
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#define PSW_SHIFT_KEY 52
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+#define PSW_MASK_SHORTPSW 0x0008000000000000ULL
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#define PSW_MASK_MCHECK 0x0004000000000000ULL
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#define PSW_MASK_WAIT 0x0002000000000000ULL
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#define PSW_MASK_PSTATE 0x0001000000000000ULL
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--
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2.27.0
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