From: Salil Mehta <salil.mehta@huawei.com>

ACPI 'acpi_cpu_{device_check,eject_request}_cb()' uses 'get_cpu_status()'
API to get the existing 'AcpiCpuOspmStateStatus' of the CPU being 'online'd or
offline'd' after VM has initialized. Later usesCPUClass::get_arch_id` to match
the CPU. Hence, we must add ARM CPU architecture specific accessor hook to fetch
`mp-affinity` programmed in the KVM host.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 target/arm/cpu.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 0ceaf69092..d147e786c1 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -2744,6 +2744,11 @@ static const TCGCPUOps arm_tcg_ops = {
 };
 #endif /* CONFIG_TCG */
 
+static int64_t arm_cpu_get_arch_id(CPUState *cs)
+{
+    return arm_cpu_mp_affinity(ARM_CPU(cs));
+}
+
 static void arm_cpu_class_init(ObjectClass *oc, const void *data)
 {
     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
@@ -2763,6 +2768,7 @@ static void arm_cpu_class_init(ObjectClass *oc, const void *data)
     cc->dump_state = arm_cpu_dump_state;
     cc->set_pc = arm_cpu_set_pc;
     cc->get_pc = arm_cpu_get_pc;
+    cc->get_arch_id = arm_cpu_get_arch_id;
     cc->gdb_read_register = arm_cpu_gdb_read_register;
     cc->gdb_write_register = arm_cpu_gdb_write_register;
 #ifndef CONFIG_USER_ONLY
-- 
2.34.1