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[Qemu-devel] [PATCH v1 17/27] s390x/kvm: factor out actual handling of S
From: |
David Hildenbrand |
Subject: |
[Qemu-devel] [PATCH v1 17/27] s390x/kvm: factor out actual handling of STOP interrupts |
Date: |
Mon, 18 Sep 2017 18:00:02 +0200 |
For KVM, the KVM module decides when a STOP can be performed (when the
STOP interrupt can be processed). Factor it out so we can use it
later for TCG.
Signed-off-by: David Hildenbrand <address@hidden>
---
target/s390x/internal.h | 1 +
target/s390x/kvm.c | 8 +-------
target/s390x/sigp.c | 15 ++++++++++++++-
3 files changed, 16 insertions(+), 8 deletions(-)
diff --git a/target/s390x/internal.h b/target/s390x/internal.h
index 99413beeae..2e738de6af 100644
--- a/target/s390x/internal.h
+++ b/target/s390x/internal.h
@@ -400,5 +400,6 @@ void s390x_translate_init(void);
/* sigp.c */
int handle_sigp(CPUS390XState *env, uint8_t order, uint64_t r1, uint64_t r3);
+void do_stop_interrupt(CPUS390XState *env);
#endif /* S390X_INTERNAL_H */
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 142b63eef0..eb8b297a88 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -1594,13 +1594,7 @@ static int handle_intercept(S390CPU *cpu)
r = EXCP_HALTED;
break;
case ICPT_CPU_STOP:
- if (s390_cpu_set_state(CPU_STATE_STOPPED, cpu) == 0) {
- qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
- }
- if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
- s390_store_status(cpu, S390_STORE_STATUS_DEF_ADDR, true);
- }
- cpu->env.sigp_order = 0;
+ do_stop_interrupt(&cpu->env);
r = EXCP_HALTED;
break;
case ICPT_OPEREXC:
diff --git a/target/s390x/sigp.c b/target/s390x/sigp.c
index 4813123aad..9587c3d319 100644
--- a/target/s390x/sigp.c
+++ b/target/s390x/sigp.c
@@ -81,7 +81,7 @@ static void sigp_stop_and_store_status(CPUState *cs,
run_on_cpu_data arg)
case CPU_STATE_OPERATING:
cpu->env.sigp_order = SIGP_STOP_STORE_STATUS;
cpu_inject_stop(cpu);
- /* store will be performed when handling the stop intercept */
+ /* store will be performed in do_stop_interrup() */
break;
case CPU_STATE_STOPPED:
/* already stopped, just store the status */
@@ -360,6 +360,19 @@ int s390_cpu_restart(S390CPU *cpu)
return 0;
}
+void do_stop_interrupt(CPUS390XState *env)
+{
+ S390CPU *cpu = s390_env_get_cpu(env);
+
+ if (s390_cpu_set_state(CPU_STATE_STOPPED, cpu) == 0) {
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ }
+ if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
+ s390_store_status(cpu, S390_STORE_STATUS_DEF_ADDR, true);
+ }
+ env->sigp_order = 0;
+}
+
void s390_init_sigp(void)
{
qemu_mutex_init(&qemu_sigp_mutex);
--
2.13.5
- [Qemu-devel] [PATCH v1 11/27] s390x/kvm: generalize SIGP stop and restart interrupt injection, (continued)
- [Qemu-devel] [PATCH v1 11/27] s390x/kvm: generalize SIGP stop and restart interrupt injection, David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 12/27] s390x/kvm: factor out storing of CPU status, David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 15/27] s390x/kvm: drop two debug prints, David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 13/27] target/s390x: proper cpu->be convertion in s390_store_status(), David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 14/27] s390x/kvm: factor out storing of adtl CPU status, David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 17/27] s390x/kvm: factor out actual handling of STOP interrupts,
David Hildenbrand <=
- [Qemu-devel] [PATCH v1 19/27] s390x/tcg: implement SIGP SENSE, David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 21/27] s390x/tcg: implement SIGP EMERGENCY SIGNAL, David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 16/27] s390x/kvm: factor out SIGP code into sigp.c, David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 18/27] s390x/tcg: implement SIGP SENSE RUNNING STATUS, David Hildenbrand, 2017/09/18
- [Qemu-devel] [PATCH v1 20/27] s390x/tcg: implement SIGP EXTERNAL CALL, David Hildenbrand, 2017/09/18