linux-kernel - Re: [djiang:cxl-security 1/19] include/linux/memregion.h:54:9: error: implicit declaration of function 'WARN_ON

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Date:   Wed, 21 Sep 2022 14:44:25 -0700
From:   Davidlohr Bueso <dave@...olabs.net>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Dave Jiang <dave.jiang@...el.com>
Subject: Re: [djiang:cxl-security 1/19] include/linux/memregion.h:54:9:
 error: implicit declaration of function 'WARN_ON_ONCE'

On Thu, 22 Sep 2022, kernel test robot wrote:
>
>    51
>    52	int cpu_cache_invalidate_memregion(int res_desc)
>    53	{
>  > 54		WARN_ON_ONCE("CPU cache invalidation required");
>

Looks like memregion.h needs to include kernel.h. I'll send a new version
along with EOPNOTSUPP return.