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From:   Thomas Gleixner <tglx@linutronix.de>
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To:     Yaohui Wang <yaohuiwang@linux.alibaba.com>,
        dave.hansen@linux.intel.com
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        bp@alien8.de, x86@kernel.org, linux-kernel@vger.kernel.org,
        Ben Luo <luoben@linux.alibaba.com>,
        Yahui Wang <yaohuiwang@linux.alibaba.com>
Subject: Re: [PATCH v2 1/2] mm: fix the pfn calculation mistake in __ioremap_check_ram
In-Reply-To: <87r1gxh7nj.ffs@nanos.tec.linutronix.de>
References: <20210611042147.80744-1-yaohuiwang@linux.alibaba.com> <20210611042147.80744-2-yaohuiwang@linux.alibaba.com> <87r1gxh7nj.ffs@nanos.tec.linutronix.de>
Date:   Mon, 21 Jun 2021 10:06:19 +0200
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On Sat, Jun 19 2021 at 23:22, Thomas Gleixner wrote:
> Please make that:
>
>        start_pfn = PFN_DOWN(res->start);
>        stop_pfn = PFN_UP(res->end);

That should obviously be PFN_DOWN(res->end) as well.