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hw/intc/arm_gicv3_its: Fix the VM termination in vm_change_state_handler() 

The commit cddafd8f35 ("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>
master
Shanker Donthineni 2017-11-07 13:03:51 +00:00 committed by Peter Maydell
parent 3448d47b31
commit 3a575cd2c2
1 changed files with 2 additions and 2 deletions
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4
hw/intc/arm_gicv3_its_kvm.c
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@ -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);
}
/**