linux-kernel - Re: [PATCH] dma-pool: Do not allocate pool memory from CMA

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Message-ID: <20200721112842.GB27356@lst.de>
Date:   Tue, 21 Jul 2020 13:28:42 +0200
From:   Christoph Hellwig <hch@....de>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Cc:     Amit Pundir <amit.pundir@...aro.org>,
        Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        David Rientjes <rientjes@...gle.com>,
        linux-rpi-kernel@...ts.infradead.org, jeremy.linton@....com,
        iommu@...ts.linux-foundation.org,
        lkml <linux-kernel@...r.kernel.org>,
        John Stultz <john.stultz@...aro.org>,
        Sumit Semwal <sumit.semwal@...aro.org>
Subject: Re: [PATCH] dma-pool: Do not allocate pool memory from CMA

On Tue, Jul 21, 2020 at 01:15:23PM +0200, Nicolas Saenz Julienne wrote:
> I'm at loss at what could be failing here. Your device should be able
> to address the whole 8GB memory space, which AFAIK is the max available
> on that smartphone family. But maybe the device-tree is lying, who
> knows...

Maybe we should give your patch to allocate from CMA but check the
address a try?  (just because we can..)