linux-kernel - Re: [PATCH v2 1/2] habanalabs: support kernel memory mapping

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Message-ID: <20191024012849.GB32358@infradead.org>
Date:   Wed, 23 Oct 2019 18:28:49 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Omer Shpigelman <oshpigelman@...ana.ai>
Cc:     Christoph Hellwig <hch@...radead.org>,
        "oded.gabbay@...il.com" <oded.gabbay@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] habanalabs: support kernel memory mapping

On Wed, Oct 23, 2019 at 01:39:41PM +0000, Omer Shpigelman wrote:
> I'm not sure I understand. Can you please pin point the problematic line?

Every line you touch addr field basically.  If you have a kernel
address please store it in an actual C pointer type, not in a u64
to ensure that the compiler can do proper type checking.