Because Hyper-V requires that hypercall arguments be aligned on an 8 byte boundary, add __aligned(8) to struct retarget_msi_interrupt. Link: https://lore.kernel.org/lkml/87k1hlqlby.fsf@xxxxxxxxxxxxxxxxxxxx/ Signed-off-by: Maya Nakamura <m.maya.nakamura@xxxxxxxxx> --- drivers/pci/controller/pci-hyperv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index 9ba4d12c179c..73862eef09ec 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -420,7 +420,7 @@ struct retarget_msi_interrupt { struct hv_interrupt_entry int_entry; u64 reserved2; struct hv_device_interrupt_target int_target; -} __packed; +} __packed __aligned(8); /* * Driver specific state. -- 2.17.1