linux-kernel - Re: [PATCH] hyperv: Add missing field to hv_output_map_device

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Message-ID: <aJ5VDshC2t48ziOq@liuwe-devbox-ubuntu-v2.tail21d00.ts.net>
Date: Thu, 14 Aug 2025 21:28:46 +0000
From: Wei Liu <wei.liu@...nel.org>
To: Nuno Das Neves <nunodasneves@...ux.microsoft.com>
Cc: linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
	kys@...rosoft.com, haiyangz@...rosoft.com, wei.liu@...nel.org,
	mhklinux@...look.com, decui@...rosoft.com
Subject: Re: [PATCH] hyperv: Add missing field to
 hv_output_map_device_interrupt

On Wed, Aug 13, 2025 at 11:20:57AM -0700, Nuno Das Neves wrote:
> 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 <nunodasneves@...ux.microsoft.com>

There doesn't seem to be a need to rush this through hyperv-fixes.

Queued into hyperv-next before Michael's patches.

> ---
>  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];
>  } __packed;
>  
>  /* HV_INPUT_UNMAP_DEVICE_INTERRUPT */
> -- 
> 2.34.1
>