[Qemu-devel] [PATCH 5/8] [PATCH RFC v3] s390-qemu: cpu hotplug - ipi_states enhancements

[Jason J. Herne]

From: "Jason J. Herne" <address@hidden>

Modify s390_cpu_addr2state to allow fetching state information for cpu addresses
above smp_cpus.  Hotplug requires this capability.

Also add s390_cpu_set_state function to allow modification of ipi_state entries
during hotplug.

Signed-off-by: Jason J. Herne <address@hidden>
---
 hw/s390x/s390-virtio.c |    9 +++++----
 target-s390x/cpu.h     |    2 +-
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/hw/s390x/s390-virtio.c b/hw/s390x/s390-virtio.c
index 21e9124..5ad9cf3 100644
--- a/hw/s390x/s390-virtio.c
+++ b/hw/s390x/s390-virtio.c
@@ -54,12 +54,13 @@
 static VirtIOS390Bus *s390_bus;
 static S390CPU **ipi_states;
 
-S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
+void s390_cpu_set_ipistate(uint16_t cpu_addr, S390CPU *state)
 {
-    if (cpu_addr >= smp_cpus) {
-        return NULL;
-    }
+    ipi_states[cpu_addr] = state;
+}
 
+S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
+{
     return ipi_states[cpu_addr];
 }
 
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 877eac7..62eb810 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -377,7 +377,7 @@ static inline void kvm_s390_interrupt_internal(S390CPU 
*cpu, int type,
 
 uint8_t *s390_get_storage_keys(void);
 void s390_alloc_storage_keys(ram_addr_t ram_size);
-
+void s390_cpu_set_ipistate(uint16_t cpu_addr, S390CPU *state);
 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 void s390_add_running_cpu(S390CPU *cpu);
 unsigned s390_del_running_cpu(S390CPU *cpu);
-- 
1.7.10.4