From 3a575cd2c2411f139a95ace4b2523bc1dfd21755 Mon Sep 17 00:00:00 2001 From: Shanker Donthineni Date: Tue, 7 Nov 2017 13:03:51 +0000 Subject: hw/intc/arm_gicv3_its: Fix the VM termination in vm_change_state_handler() 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 --mode acpi" instead of reboot. KVM Error: 'KVM_SET_DEVICE_ATTR failed: Group 4 attr 0x00000000000001' Signed-off-by: Shanker Donthineni Reviewed-by: Eric Auger Message-id: 1509712671-16299-1-git-send-email-shankerd@codeaurora.org Signed-off-by: Peter Maydell --- hw/intc/arm_gicv3_its_kvm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'hw/intc/arm_gicv3_its_kvm.c') diff --git a/hw/intc/arm_gicv3_its_kvm.c b/hw/intc/arm_gicv3_its_kvm.c index 39903d5eab..9b00ce50e5 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); } /** -- cgit v1.2.3