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authorDavid Hildenbrand <david@redhat.com>2018-06-27 15:44:09 +0200
committerCornelia Huck <cohuck@redhat.com>2018-07-02 10:37:38 +0200
commit7c12f710bad60dc7e509da4e80c77e952ef0490c (patch)
tree7a6734e8fcd36c7334254106a88a0f55f05b1996 /target
parent9dc6753718d4c0fe327729fea94e4d9f3f5a3d17 (diff)
s390x/tcg: rearm the CKC timer during migration
If the CPU data is migrated after the TOD clock, the CKC timer of a CPU is not rearmed. Let's rearm it when loading the CPU state. Introduce tcg-stub.c just like kvm-stub.c for tcg specific stubs. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-9-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'target')
-rw-r--r--target/s390x/Makefile.objs1
-rw-r--r--target/s390x/machine.c6
-rw-r--r--target/s390x/tcg-stub.c20
3 files changed, 27 insertions, 0 deletions
diff --git a/target/s390x/Makefile.objs b/target/s390x/Makefile.objs
index 31932de9cf..22a9a9927a 100644
--- a/target/s390x/Makefile.objs
+++ b/target/s390x/Makefile.objs
@@ -5,6 +5,7 @@ obj-$(CONFIG_SOFTMMU) += machine.o ioinst.o arch_dump.o mmu_helper.o diag.o
obj-$(CONFIG_SOFTMMU) += sigp.o
obj-$(CONFIG_KVM) += kvm.o
obj-$(call lnot,$(CONFIG_KVM)) += kvm-stub.o
+obj-$(call lnot,$(CONFIG_TCG)) += tcg-stub.o
# build and run feature list generator
feat-src = $(SRC_PATH)/target/$(TARGET_BASE_ARCH)/
diff --git a/target/s390x/machine.c b/target/s390x/machine.c
index 84b4928755..bd3230d027 100644
--- a/target/s390x/machine.c
+++ b/target/s390x/machine.c
@@ -19,6 +19,7 @@
#include "cpu.h"
#include "internal.h"
#include "kvm_s390x.h"
+#include "tcg_s390x.h"
#include "sysemu/kvm.h"
static int cpu_post_load(void *opaque, int version_id)
@@ -34,6 +35,11 @@ static int cpu_post_load(void *opaque, int version_id)
return kvm_s390_vcpu_interrupt_post_load(cpu);
}
+ if (tcg_enabled()) {
+ /* Rearm the CKC timer if necessary */
+ tcg_s390_tod_updated(CPU(cpu), RUN_ON_CPU_NULL);
+ }
+
return 0;
}
diff --git a/target/s390x/tcg-stub.c b/target/s390x/tcg-stub.c
new file mode 100644
index 0000000000..c93501db0b
--- /dev/null
+++ b/target/s390x/tcg-stub.c
@@ -0,0 +1,20 @@
+/*
+ * QEMU TCG support -- s390x specific function stubs.
+ *
+ * Copyright (C) 2018 Red Hat Inc
+ *
+ * Authors:
+ * David Hildenbrand <david@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "cpu.h"
+#include "tcg_s390x.h"
+
+void tcg_s390_tod_updated(CPUState *cs, run_on_cpu_data opaque)
+{
+}