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From:   Thomas Gleixner <tglx@linutronix.de>
To:     ira.weiny@intel.com, Andrew Morton <akpm@linux-foundation.org>
Cc:     Ira Weiny <ira.weiny@intel.com>,
        Oliver Sang <oliver.sang@intel.com>,
        Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>,
        David Sterba <dsterba@suse.com>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/highmem: Fix CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP
In-Reply-To: <20210318230657.1497881-1-ira.weiny@intel.com>
References: <20210318230657.1497881-1-ira.weiny@intel.com>
Date:   Fri, 19 Mar 2021 03:14:03 +0100
Message-ID: <875z1n7uvo.fsf@nanos.tec.linutronix.de>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

On Thu, Mar 18 2021 at 16:06, ira weiny wrote:
> From: Ira Weiny <ira.weiny@intel.com>
>
> The kernel test robot found that __kmap_local_sched_out() was not
> correctly skipping the guard pages when
> CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP was set.[1]  This was due to
> CONFIG_DEBUG_HIGHMEM check being used.
>
> Change the configuration check to be correct.
>
> [1] https://lore.kernel.org/lkml/20210304083825.GB17830@xsang-OptiPlex-9020/
>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Oliver Sang <oliver.sang@intel.com>
> Cc: Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>
> Cc: David Sterba <dsterba@suse.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Fixes: 0e91a0c6984c ("mm/highmem: Provide CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP")
> Reported-by: kernel test robot <oliver.sang@intel.com>
> Signed-off-by: Ira Weiny <ira.weiny@intel.com>

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org

Thanks,

        tglx