hw/s390x: Replace global smp variables with machine smp properties

The global smp variables in s390x are replaced with smp machine properties.

A local variable of the same name would be introduced in the declaration
phase if it's used widely in the context OR replace it on the spot if it's
only used once. No semantic changes.

Signed-off-by: Like Xu <like.xu@linux.intel.com>
Message-Id: <20190518205428.90532-7-like.xu@linux.intel.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[ehabkost: fix build failure at VCPU_IRQ_BUF_SIZE]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

fixup! hw/s390x: Replace global smp variables with machine smp properties

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

3 files changed, 14 insertions, 4 deletions

diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 8540e7a..736a790 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -37,6 +37,7 @@
 #include "hw/qdev-properties.h"
 #ifndef CONFIG_USER_ONLY
 #include "hw/hw.h"
+#include "hw/boards.h"
 #include "sysemu/arch_init.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/tcg.h"
@@ -197,6 +198,8 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
     }
 
 #if !defined(CONFIG_USER_ONLY)
+    MachineState *ms = MACHINE(qdev_get_machine());
+    unsigned int max_cpus = ms->smp.max_cpus;
     if (cpu->env.core_id >= max_cpus) {
         error_setg(&err, "Unable to add CPU with core-id: %" PRIu32
                    ", maximum core-id: %d", cpu->env.core_id,
diff --git a/target/s390x/excp_helper.c b/target/s390x/excp_helper.c
index 202456c..892f659 100644
--- a/target/s390x/excp_helper.c
+++ b/target/s390x/excp_helper.c
@@ -31,6 +31,7 @@
 #ifndef CONFIG_USER_ONLY
 #include "sysemu/sysemu.h"
 #include "hw/s390x/s390_flic.h"
+#include "hw/boards.h"
 #endif
 
 void QEMU_NORETURN tcg_s390_program_interrupt(CPUS390XState *env, uint32_t code,
@@ -315,6 +316,10 @@ static void do_ext_interrupt(CPUS390XState *env)
         g_assert(cpu_addr < S390_MAX_CPUS);
         lowcore->cpu_addr = cpu_to_be16(cpu_addr);
         clear_bit(cpu_addr, env->emergency_signals);
+#ifndef CONFIG_USER_ONLY
+        MachineState *ms = MACHINE(qdev_get_machine());
+        unsigned int max_cpus = ms->smp.max_cpus;
+#endif
         if (bitmap_empty(env->emergency_signals, max_cpus)) {
             env->pending_int &= ~INTERRUPT_EMERGENCY_SIGNAL;
         }
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 0267c6c..6e814c2 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -119,8 +119,8 @@
  * Needs to be big enough to contain max_cpus emergency signals
  * and in addition NR_LOCAL_IRQS interrupts
  */
-#define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
-                           (max_cpus + NR_LOCAL_IRQS))
+#define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
+                                     (max_cpus + NR_LOCAL_IRQS))
 
 static CPUWatchpoint hw_watchpoint;
 /*
@@ -362,9 +362,10 @@ unsigned long kvm_arch_vcpu_id(CPUState *cpu)
 
 int kvm_arch_init_vcpu(CPUState *cs)
 {
+    unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
     S390CPU *cpu = S390_CPU(cs);
     kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
-    cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE);
+    cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus));
     return 0;
 }
 
@@ -1950,9 +1951,10 @@ int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
 
 void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
 {
+    unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
     struct kvm_s390_irq_state irq_state = {
         .buf = (uint64_t) cpu->irqstate,
-        .len = VCPU_IRQ_BUF_SIZE,
+        .len = VCPU_IRQ_BUF_SIZE(max_cpus),
     };
     CPUState *cs = CPU(cpu);
     int32_t bytes;