linux-kernel - Re: [PATCH v2] tools: hv: suppress the invalid warning for packed member alignment

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Message-ID: <ZlVrYKHhtVwXq2XX@liuwe-devbox-debian-v2>
Date: Tue, 28 May 2024 05:28:00 +0000
From: Wei Liu <wei.liu@...nel.org>
To: Saurabh Sengar <ssengar@...ux.microsoft.com>
Cc: kys@...rosoft.com, haiyangz@...rosoft.com, wei.liu@...nel.org,
	decui@...rosoft.com, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org, linux-hyperv@...r.kernel.org,
	ssengar@...rosoft.com, maryhardy@...rosoft.com,
	longli@...rosoft.com
Subject: Re: [PATCH v2] tools: hv: suppress the invalid warning for packed
 member alignment

On Sun, May 05, 2024 at 10:38:58PM -0700, Saurabh Sengar wrote:
> Packed struct vmbus_bufring is 4096 byte aligned and the reporting
> warning is for the first member of that struct which shouldn't add
> any offset to create alignment issue.
> 
> Suppress the warning by adding -Wno-address-of-packed-member flag to
> gcc.
> 
> Fixes: 45bab4d74651 ("tools: hv: Add vmbus_bufring")
> Reported-by: kernel test robot <yujie.liu@...el.com>
> Closes: https://lore.kernel.org/all/202404121913.GhtSoKbW-lkp@intel.com/
> Signed-off-by: Saurabh Sengar <ssengar@...ux.microsoft.com>

Applied to hyperv-fixes, thanks.