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From 15af83ccafc175c7a61d39f998ac7eb43829e53c Mon Sep 17 00:00:00 2001
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From: David Hildenbrand <david@redhat.com>
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Date: Fri, 21 Dec 2018 15:36:07 +0000
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Subject: [PATCH 05/22] s390x/tcg: properly implement the TOD
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RH-Author: David Hildenbrand <david@redhat.com>
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Message-id: <20181221153614.27961-6-david@redhat.com>
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Patchwork-id: 83751
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O-Subject: [RHEL-8.0 qemu-kvm v2 PATCH 05/12] s390x/tcg: properly implement the TOD
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Bugzilla: 1653569
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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Right now, each CPU has its own TOD. Especially, the TOD will differ
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based on creation time of a CPU - e.g. when hotplugging a CPU the times
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will differ quite a lot, resulting in stall warnings in the guest.
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Let's use a single TOD by implementing our new TOD device. Prepare it
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for TOD-clock epoch extension.
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Most importantly, whenever we set the TOD, we have to update the CKC
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timer.
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Introduce "tcg_s390x.h" just like "kvm_s390x.h" for tcg specific
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function declarations that should not go into cpu.h.
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Reviewed-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: David Hildenbrand <david@redhat.com>
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Message-Id: <20180627134410.4901-6-david@redhat.com>
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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(cherry picked from commit 7de3b1cdc67dcb572c1761c2051252e91a438b22)
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Signed-off-by: David Hildenbrand <david@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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hw/s390x/tod-qemu.c | 46 ++++++++++++++++++++++++++++++++++++++++++----
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hw/s390x/tod.c | 11 +++++++++++
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include/hw/s390x/tod.h | 19 +++++++++++++++++++
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target/s390x/cpu.c | 7 -------
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target/s390x/cpu.h | 1 -
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target/s390x/internal.h | 16 ----------------
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target/s390x/misc_helper.c | 25 +++++++++++++++++++------
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target/s390x/tcg_s390x.h | 18 ++++++++++++++++++
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8 files changed, 109 insertions(+), 34 deletions(-)
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create mode 100644 target/s390x/tcg_s390x.h
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diff --git a/hw/s390x/tod-qemu.c b/hw/s390x/tod-qemu.c
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index 03ea1ce..59c015c 100644
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--- a/hw/s390x/tod-qemu.c
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+++ b/hw/s390x/tod-qemu.c
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@@ -11,19 +11,43 @@
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/s390x/tod.h"
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+#include "qemu/timer.h"
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+#include "qemu/cutils.h"
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+#include "cpu.h"
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+#include "tcg_s390x.h"
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static void qemu_s390_tod_get(const S390TODState *td, S390TOD *tod,
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Error **errp)
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{
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- /* FIXME */
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- tod->high = 0;
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- tod->low = 0;
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+ *tod = td->base;
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+
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+ tod->low += time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
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+ if (tod->low < td->base.low) {
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+ tod->high++;
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+ }
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}
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static void qemu_s390_tod_set(S390TODState *td, const S390TOD *tod,
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Error **errp)
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{
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- /* FIXME */
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+ CPUState *cpu;
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+
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+ td->base = *tod;
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+
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+ td->base.low -= time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
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+ if (td->base.low > tod->low) {
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+ td->base.high--;
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+ }
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+
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+ /*
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+ * The TOD has been changed and we have to recalculate the CKC values
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+ * for all CPUs. We do this asynchronously, as "SET CLOCK should be
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+ * issued only while all other activity on all CPUs .. has been
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ * suspended".
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ */
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ CPU_FOREACH(cpu) {
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ async_run_on_cpu(cpu, tcg_s390_tod_updated, RUN_ON_CPU_NULL);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ }
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
}
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
static void qemu_s390_tod_class_init(ObjectClass *oc, void *data)
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
@@ -34,10 +58,24 @@ static void qemu_s390_tod_class_init(ObjectClass *oc, void *data)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
tdc->set = qemu_s390_tod_set;
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|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
}
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+static void qemu_s390_tod_init(Object *obj)
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+{
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ S390TODState *td = S390_TOD(obj);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ struct tm tm;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ qemu_get_timedate(&tm, 0);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ td->base.high = 0;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ td->base.low = TOD_UNIX_EPOCH + (time2tod(mktimegm(&tm)) * 1000000000ULL);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ if (td->base.low < TOD_UNIX_EPOCH) {
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ td->base.high += 1;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ }
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+}
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
static TypeInfo qemu_s390_tod_info = {
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
.name = TYPE_QEMU_S390_TOD,
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
.parent = TYPE_S390_TOD,
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
.instance_size = sizeof(S390TODState),
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ .instance_init = qemu_s390_tod_init,
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
.class_init = qemu_s390_tod_class_init,
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
.class_size = sizeof(S390TODClass),
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
};
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
diff --git a/hw/s390x/tod.c b/hw/s390x/tod.c
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
index 0501aff..1c63f41 100644
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
--- a/hw/s390x/tod.c
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+++ b/hw/s390x/tod.c
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
@@ -30,6 +30,17 @@ void s390_init_tod(void)
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
qdev_init_nofail(DEVICE(obj));
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
}
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+S390TODState *s390_get_todstate(void)
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+{
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ static S390TODState *ts;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ if (!ts) {
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ ts = S390_TOD(object_resolve_path_type("", TYPE_S390_TOD, NULL));
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ }
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ return ts;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+}
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
#define S390_TOD_CLOCK_VALUE_MISSING 0x00
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
#define S390_TOD_CLOCK_VALUE_PRESENT 0x01
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
diff --git a/include/hw/s390x/tod.h b/include/hw/s390x/tod.h
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
index 7096b57..413c0d7 100644
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
--- a/include/hw/s390x/tod.h
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+++ b/include/hw/s390x/tod.h
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
@@ -30,6 +30,9 @@ typedef struct S390TOD {
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
typedef struct S390TODState {
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
/* private */
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
DeviceState parent_obj;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ /* unused by KVM implementation */
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ S390TOD base;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
} S390TODState;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
typedef struct S390TODClass {
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
@@ -41,6 +44,22 @@ typedef struct S390TODClass {
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
void (*set)(S390TODState *td, const S390TOD *tod, Error **errp);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
} S390TODClass;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+/* The value of the TOD clock for 1.1.1970. */
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+/* Converts ns to s390's clock format */
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+static inline uint64_t time2tod(uint64_t ns)
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+{
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ return (ns << 9) / 125 + (((ns & 0xff10000000000000ull) / 125) << 9);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+}
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+/* Converts s390's clock format to ns */
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+static inline uint64_t tod2time(uint64_t t)
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+{
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+ return ((t >> 9) * 125) + (((t & 0x1ff) * 125) >> 9);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+}
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
void s390_init_tod(void);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
+S390TODState *s390_get_todstate(void);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
#endif
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
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ae23c9 |
index 5570741..f74d2a3 100644
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ae23c9 |
--- a/target/s390x/cpu.c
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ae23c9 |
+++ b/target/s390x/cpu.c
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ae23c9 |
@@ -30,7 +30,6 @@
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ae23c9 |
#include "kvm_s390x.h"
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ae23c9 |
#include "sysemu/kvm.h"
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ae23c9 |
#include "qemu-common.h"
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ae23c9 |
-#include "qemu/cutils.h"
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ae23c9 |
#include "qemu/timer.h"
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ae23c9 |
#include "qemu/error-report.h"
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ae23c9 |
#include "trace.h"
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ae23c9 |
@@ -276,9 +275,6 @@ static void s390_cpu_initfn(Object *obj)
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ae23c9 |
CPUState *cs = CPU(obj);
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ae23c9 |
S390CPU *cpu = S390_CPU(obj);
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ae23c9 |
CPUS390XState *env = &cpu->env;
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ae23c9 |
-#if !defined(CONFIG_USER_ONLY)
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ae23c9 |
- struct tm tm;
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ae23c9 |
-#endif
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ae23c9 |
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ae23c9 |
cs->env_ptr = env;
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ae23c9 |
cs->halted = 1;
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ae23c9 |
@@ -287,9 +283,6 @@ static void s390_cpu_initfn(Object *obj)
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ae23c9 |
s390_cpu_get_crash_info_qom, NULL, NULL, NULL, NULL);
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ae23c9 |
s390_cpu_model_register_props(obj);
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ae23c9 |
#if !defined(CONFIG_USER_ONLY)
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ae23c9 |
- qemu_get_timedate(&tm, 0);
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ae23c9 |
- env->tod_offset = TOD_UNIX_EPOCH +
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ae23c9 |
- (time2tod(mktimegm(&tm)) * 1000000000ULL);
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ae23c9 |
env->tod_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_tod_timer, cpu);
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ae23c9 |
env->cpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_cpu_timer, cpu);
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ae23c9 |
s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu);
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ae23c9 |
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
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ae23c9 |
index 04f9adf..6500f42 100644
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ae23c9 |
--- a/target/s390x/cpu.h
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ae23c9 |
+++ b/target/s390x/cpu.h
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ae23c9 |
@@ -133,7 +133,6 @@ struct CPUS390XState {
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ae23c9 |
uint64_t cpuid;
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ae23c9 |
#endif
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ae23c9 |
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ae23c9 |
- uint64_t tod_offset;
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ae23c9 |
QEMUTimer *tod_timer;
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ae23c9 |
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ae23c9 |
QEMUTimer *cpu_timer;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
diff --git a/target/s390x/internal.h b/target/s390x/internal.h
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ae23c9 |
index d1ed06f..61a509d 100644
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ae23c9 |
--- a/target/s390x/internal.h
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ae23c9 |
+++ b/target/s390x/internal.h
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ae23c9 |
@@ -237,22 +237,6 @@ enum cc_op {
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ae23c9 |
CC_OP_MAX
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ae23c9 |
};
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ae23c9 |
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ae23c9 |
-/* The value of the TOD clock for 1.1.1970. */
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ae23c9 |
-#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
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ae23c9 |
-
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ae23c9 |
-/* Converts ns to s390's clock format */
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ae23c9 |
-static inline uint64_t time2tod(uint64_t ns)
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ae23c9 |
-{
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ae23c9 |
- return (ns << 9) / 125 + (((ns & 0xff10000000000000ull) / 125) << 9);
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ae23c9 |
-
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ae23c9 |
-}
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ae23c9 |
-
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ae23c9 |
-/* Converts s390's clock format to ns */
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ae23c9 |
-static inline uint64_t tod2time(uint64_t t)
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ae23c9 |
-{
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ae23c9 |
- return ((t >> 9) * 125) + (((t & 0x1ff) * 125) >> 9);
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ae23c9 |
-}
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ae23c9 |
-
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ae23c9 |
static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb,
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ae23c9 |
uint8_t *ar)
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ae23c9 |
{
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ae23c9 |
diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c
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ae23c9 |
index 8b3b040..4f675c7 100644
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ae23c9 |
--- a/target/s390x/misc_helper.c
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ae23c9 |
+++ b/target/s390x/misc_helper.c
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ae23c9 |
@@ -29,6 +29,8 @@
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ae23c9 |
#include "exec/address-spaces.h"
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ae23c9 |
#include "exec/exec-all.h"
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ae23c9 |
#include "exec/cpu_ldst.h"
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ae23c9 |
+#include "qapi/error.h"
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ae23c9 |
+#include "tcg_s390x.h"
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ae23c9 |
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ae23c9 |
#if !defined(CONFIG_USER_ONLY)
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ae23c9 |
#include "sysemu/cpus.h"
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ae23c9 |
@@ -40,6 +42,7 @@
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ae23c9 |
#include "hw/s390x/ioinst.h"
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ae23c9 |
#include "hw/s390x/s390-pci-inst.h"
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ae23c9 |
#include "hw/boards.h"
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ae23c9 |
+#include "hw/s390x/tod.h"
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ae23c9 |
#endif
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ae23c9 |
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ae23c9 |
/* #define DEBUG_HELPER */
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@@ -139,17 +142,19 @@ void HELPER(spx)(CPUS390XState *env, uint64_t a1)
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/* Store Clock */
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uint64_t HELPER(stck)(CPUS390XState *env)
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{
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- uint64_t time;
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+ S390TODState *td = s390_get_todstate();
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+ S390TODClass *tdc = S390_TOD_GET_CLASS(td);
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+ S390TOD tod;
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- time = env->tod_offset +
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- time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
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-
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- return time;
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+ tdc->get(td, &tod, &error_abort);
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+ return tod.low;
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}
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/* Set Clock Comparator */
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void HELPER(sckc)(CPUS390XState *env, uint64_t time)
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{
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+ S390TODState *td = s390_get_todstate();
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+
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if (time == -1ULL) {
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return;
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}
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@@ -157,7 +162,7 @@ void HELPER(sckc)(CPUS390XState *env, uint64_t time)
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env->ckc = time;
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/* difference between origins */
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- time -= env->tod_offset;
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+ time -= td->base.low;
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/* nanoseconds */
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time = tod2time(time);
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@@ -165,6 +170,14 @@ void HELPER(sckc)(CPUS390XState *env, uint64_t time)
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timer_mod(env->tod_timer, time);
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}
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+void tcg_s390_tod_updated(CPUState *cs, run_on_cpu_data opaque)
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+{
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+ S390CPU *cpu = S390_CPU(cs);
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+ CPUS390XState *env = &cpu->env;
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+
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+ helper_sckc(env, env->ckc);
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+}
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+
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/* Set Tod Programmable Field */
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void HELPER(sckpf)(CPUS390XState *env, uint64_t r0)
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{
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diff --git a/target/s390x/tcg_s390x.h b/target/s390x/tcg_s390x.h
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new file mode 100644
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index 0000000..4e308aa
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--- /dev/null
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+++ b/target/s390x/tcg_s390x.h
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@@ -0,0 +1,18 @@
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+/*
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+ * QEMU TCG support -- s390x specific functions.
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+ *
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+ * Copyright 2018 Red Hat, Inc.
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+ *
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+ * Authors:
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+ * David Hildenbrand <david@redhat.com>
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+ *
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+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
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+ * See the COPYING file in the top-level directory.
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+ */
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+
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+#ifndef TCG_S390X_H
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+#define TCG_S390X_H
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+
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+void tcg_s390_tod_updated(CPUState *cs, run_on_cpu_data opaque);
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+
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+#endif /* TCG_S390X_H */
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--
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1.8.3.1
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