[PATCH 11/16] accel/kvm: Consistently return CPU halt state from process_async_events

["Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>]

When comparing the KVM implementations, RISCV and ARM differ
from S390x / PPC and LoongArch. The caller expects a non-zero
value to return pausing execution with the EXCP_HLT exception:

  3427 int kvm_cpu_exec(CPUState *cpu)
  3428 {
  ...
  3434     if (kvm_arch_process_async_events(cpu)) {
  3435         return EXCP_HLT;
  3436     }
  3437
  3438     bql_unlock();
  3439     cpu_exec_start(cpu);
  3440
  3441     /* Inner vCPU loop */
  3442     do {
  ...

Change ARM and RISC-V to return cs->halted for consistent behavior.

Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
---
 target/arm/kvm.c           | 2 +-
 target/riscv/kvm/kvm-cpu.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index d40a6a98591..5caabfab63f 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -1575,7 +1575,7 @@ bool kvm_arch_stop_on_emulation_error(CPUState *cs)
 
 int kvm_arch_process_async_events(CPUState *cs)
 {
-    return 0;
+    return cs->halted;
 }
 
 /**
diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
index 97069bf597a..1a61cd5ef37 100644
--- a/target/riscv/kvm/kvm-cpu.c
+++ b/target/riscv/kvm/kvm-cpu.c
@@ -1568,7 +1568,7 @@ int kvm_arch_irqchip_create(KVMState *s)
 
 int kvm_arch_process_async_events(CPUState *cs)
 {
-    return 0;
+    return cs->halted;
 }
 
 void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
-- 
2.53.0