From: Nuno Das Neves <nunodasne...@linux.microsoft.com> Sent: Wednesday, August
13, 2025 11:21 AM
>
> This field is unused, but the correct structure size is needed
> when computing the amount of space for the output argument to
> reside, so that it does not cross a page boundary.
>
> Signed-off-by: Nuno Das Neves <nunodasne...@linux.microsoft.com>
> ---
> include/hyperv/hvhdk_mini.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/include/hyperv/hvhdk_mini.h b/include/hyperv/hvhdk_mini.h
> index 42e7876455b5..858f6a3925b3 100644
> --- a/include/hyperv/hvhdk_mini.h
> +++ b/include/hyperv/hvhdk_mini.h
> @@ -301,6 +301,7 @@ struct hv_input_map_device_interrupt {
> /* HV_OUTPUT_MAP_DEVICE_INTERRUPT */
> struct hv_output_map_device_interrupt {
> struct hv_interrupt_entry interrupt_entry;
> + u64 ext_status_deprecated[5];
Your email identifying the problem said that without this
change, struct hv_output_map_device_interrupt is 0x10
bytes in size, which matches what I calculate from the definition.
This change adds 0x28 bytes, making the struct size now 0x38
bytes. But your other email said Hyper-V expects the size to be
0x58 bytes. Is array size "5" correct, or is there some other
cause of the discrepancy?
Michael
> } __packed;
>
> /* HV_INPUT_UNMAP_DEVICE_INTERRUPT */
> --
> 2.34.1
