linux-kernel - Re: [PATCH V2] net: ethernet: mellanox: correct page conversion

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Message-ID: <20160418121247.GA25387@infradead.org>
Date:	Mon, 18 Apr 2016 05:12:47 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Sinan Kaya <okaya@...eaurora.org>
Cc:	linux-rdma@...r.kernel.org, timur@...eaurora.org,
	cov@...eaurora.org, Yishai Hadas <yishaih@...lanox.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] net: ethernet: mellanox: correct page conversion

On Sat, Apr 16, 2016 at 06:23:32PM -0400, Sinan Kaya wrote:
> Current code is assuming that the address returned by dma_alloc_coherent
> is a logical address. This is not true on ARM/ARM64 systems.

Can you explain what you mean with a 'logical address' and what actual
issue you're trying to solve?