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From 2c2a89b2c366969ef32d9ede7ff0af92d22eee10 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 15:36:10 +0000
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Subject: [PATCH 08/22] s390x/tcg: rearm the CKC timer during migration
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RH-Author: David Hildenbrand <david@redhat.com>
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Message-id: <20181221153614.27961-9-david@redhat.com>
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Patchwork-id: 83752
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O-Subject: [RHEL-8.0 qemu-kvm v2 PATCH 08/12] s390x/tcg: rearm the CKC timer during migration
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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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If the CPU data is migrated after the TOD clock, the CKC timer of a CPU
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is not rearmed. Let's rearm it when loading the CPU state.
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Introduce tcg-stub.c just like kvm-stub.c for tcg specific stubs.
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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: <20180627134410.4901-9-david@redhat.com>
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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(cherry picked from commit 7c12f710bad60dc7e509da4e80c77e952ef0490c)
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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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target/s390x/Makefile.objs | 1 +
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target/s390x/machine.c | 6 ++++++
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target/s390x/tcg-stub.c | 20 ++++++++++++++++++++
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3 files changed, 27 insertions(+)
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create mode 100644 target/s390x/tcg-stub.c
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diff --git a/target/s390x/Makefile.objs b/target/s390x/Makefile.objs
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index 31932de..22a9a99 100644
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--- a/target/s390x/Makefile.objs
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+++ b/target/s390x/Makefile.objs
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@@ -5,6 +5,7 @@ obj-$(CONFIG_SOFTMMU) += machine.o ioinst.o arch_dump.o mmu_helper.o diag.o
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obj-$(CONFIG_SOFTMMU) += sigp.o
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obj-$(CONFIG_KVM) += kvm.o
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obj-$(call lnot,$(CONFIG_KVM)) += kvm-stub.o
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+obj-$(call lnot,$(CONFIG_TCG)) += tcg-stub.o
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# build and run feature list generator
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feat-src = $(SRC_PATH)/target/$(TARGET_BASE_ARCH)/
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diff --git a/target/s390x/machine.c b/target/s390x/machine.c
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index 8421deb..cb792aa 100644
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--- a/target/s390x/machine.c
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+++ b/target/s390x/machine.c
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@@ -19,6 +19,7 @@
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#include "cpu.h"
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#include "internal.h"
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#include "kvm_s390x.h"
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+#include "tcg_s390x.h"
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#include "sysemu/kvm.h"
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static int cpu_post_load(void *opaque, int version_id)
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@@ -34,6 +35,11 @@ static int cpu_post_load(void *opaque, int version_id)
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return kvm_s390_vcpu_interrupt_post_load(cpu);
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}
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+ if (tcg_enabled()) {
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+ /* Rearm the CKC timer if necessary */
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+ tcg_s390_tod_updated(CPU(cpu), RUN_ON_CPU_NULL);
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+ }
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+
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return 0;
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}
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diff --git a/target/s390x/tcg-stub.c b/target/s390x/tcg-stub.c
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new file mode 100644
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index 0000000..c93501d
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--- /dev/null
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+++ b/target/s390x/tcg-stub.c
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@@ -0,0 +1,20 @@
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+/*
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+ * QEMU TCG support -- s390x specific function stubs.
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+ *
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+ * Copyright (C) 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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+#include "qemu/osdep.h"
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+#include "qemu-common.h"
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+#include "cpu.h"
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+#include "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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+}
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--
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1.8.3.1
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