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

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Date:   Tue, 21 Jul 2020 17:46:33 +0530
From:   Amit Pundir <amit.pundir@...aro.org>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Cc:     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, 21 Jul 2020 at 17:07, Nicolas Saenz Julienne
<nsaenzjulienne@...e.de> wrote:
>
> On Tue, 2020-07-21 at 13:28 +0200, Christoph Hellwig wrote:
> > 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..)
>
> Yes, good idea!
>
> Amir, could you also test this patch[1] (having reverted the one that
> casues trouble) and report on whether it boots or not?

Can't boot with that patch either.

Regards,
Amit Pundir


>
> Regards,
> Nicolas
>
> [1] https://lore.kernel.org/linux-iomhttps://lore.kernel.org/linux-iom
> mu/fe14037b02fd887a73cd91c115dccc4485f8446e.camel@...e.de/T/#t
>
>