[PATCH V6 3/8] kvm: Handle exit reason KVM_EXIT_SYSTEM_EVENT

[Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx>]

In-kernel PSCI v0.2 emulation of KVM ARM/ARM64 forwards SYSTEM_OFF
and SYSTEM_RESET function calls to QEMU using KVM_EXIT_SYSTEM_EVENT
exit reason.

This patch updates kvm_cpu_exec() to handle KVM_SYSTEM_EVENT_SHUTDOWN
and KVM_SYSTEM_EVENT_RESET system-level events from QEMU-side.

Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx>
Signed-off-by: Anup Patel <anup.patel@xxxxxxxxxx>
Reviewed-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
---
 kvm-all.c |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/kvm-all.c b/kvm-all.c
index a343ede..f87c1d5 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1713,6 +1713,22 @@ int kvm_cpu_exec(CPUState *cpu)
         case KVM_EXIT_INTERNAL_ERROR:
             ret = kvm_handle_internal_error(cpu, run);
             break;
+        case KVM_EXIT_SYSTEM_EVENT:
+            switch (run->system_event.type) {
+            case KVM_SYSTEM_EVENT_SHUTDOWN:
+                qemu_system_shutdown_request();
+                ret = EXCP_INTERRUPT;
+                break;
+            case KVM_SYSTEM_EVENT_RESET:
+                qemu_system_reset_request();
+                ret = EXCP_INTERRUPT;
+                break;
+            default:
+                DPRINTF("kvm_arch_handle_exit\n");
+                ret = kvm_arch_handle_exit(cpu, run);
+                break;
+            }
+            break;
         default:
             DPRINTF("kvm_arch_handle_exit\n");
             ret = kvm_arch_handle_exit(cpu, run);
-- 
1.7.9.5

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