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_arch_handle_exit() to handle KVM_EXIT_SYSTEM_EVENT
from QEMU-side for KVM ARM/ARM64.
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx>
Signed-off-by: Anup Patel <anup.patel@xxxxxxxxxx>
---
target-arm/kvm.c | 30 +++++++++++++++++++++++++++++-
1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/target-arm/kvm.c b/target-arm/kvm.c
index 1d2688d..7c0aec6 100644
--- a/target-arm/kvm.c
+++ b/target-arm/kvm.c
@@ -325,7 +325,35 @@ void kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
{
- return 0;
+ int ret = 0;
+
+ switch (run->exit_reason) {
+ 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:
+ fprintf(stderr, "KVM: unknown system event %d\n",
+ run->system_event.type);
+ ret = -1;
+ break;
+ }
+ break;
+
+ default:
+ fprintf(stderr, "KVM: unknown exit reason %d\n",
+ run->exit_reason);
+ ret = -1;
+ break;
+ }
+
+ return ret;
}
bool kvm_arch_stop_on_emulation_error(CPUState *cs)
--
1.7.9.5
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