diff mbox series

[PULL,6/7] hw/intc/arm_gicv3_its: Fix the VM termination in vm_change_state_handler()

Message ID 1510061722-14092-7-git-send-email-peter.maydell@linaro.org
State Accepted
Commit 3a575cd2c2411f139a95ace4b2523bc1dfd21755
Headers show
Series target-arm queue | expand

Commit Message

Peter Maydell Nov. 7, 2017, 1:35 p.m. UTC 
From: Shanker Donthineni <shankerd@codeaurora.org>


The commit cddafd8f353d ("hw/intc/arm_gicv3_its: Implement state save
/restore") breaks the backward compatibility with the older kernels
where vITS save/restore support is not available. The vmstate function
vm_change_state_handler() should not be registered if the running kernel
doesn't support ITS save/restore feature. Otherwise VM instance will be
killed whenever vmstate callback function is invoked.

Observed a virtual machine shutdown with QEMU-2.10+linux-4.11 when testing
the reboot command "virsh reboot <domain> --mode acpi" instead of reboot.

KVM Error: 'KVM_SET_DEVICE_ATTR failed: Group 4 attr 0x00000000000001'

Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>

Reviewed-by: Eric Auger <eric.auger@redhat.com>

Message-id: 1509712671-16299-1-git-send-email-shankerd@codeaurora.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

---
 hw/intc/arm_gicv3_its_kvm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.7.4
diff mbox series

Patch

diff --git a/hw/intc/arm_gicv3_its_kvm.c b/hw/intc/arm_gicv3_its_kvm.c
index 39903d5..9b00ce5 100644
--- a/hw/intc/arm_gicv3_its_kvm.c
+++ b/hw/intc/arm_gicv3_its_kvm.c
@@ -111,13 +111,13 @@  static void kvm_arm_its_realize(DeviceState *dev, Error **errp)
             error_free(s->migration_blocker);
             return;
         }
+    } else {
+        qemu_add_vm_change_state_handler(vm_change_state_handler, s);
     }
 
     kvm_msi_use_devid = true;
     kvm_gsi_direct_mapping = false;
     kvm_msi_via_irqfd_allowed = kvm_irqfds_enabled();
-
-    qemu_add_vm_change_state_handler(vm_change_state_handler, s);
 }
 
 /**