From: ". Christoph Hellwig" <hch@lst.de>
To: Ricardo Ribalda <ribalda@chromium.org>
Cc: Sergey Senozhatsky <senozhatsky@google.com>,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Linux Doc Mailing List <linux-doc@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
IOMMU DRIVERS <iommu@lists.linux-foundation.org>,
Linux Media Mailing List <linux-media@vger.kernel.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
". Christoph Hellwig" <hch@lst.de>
Subject: Re: [PATCH v3 5/6] media: uvcvideo: Use dma_alloc_noncontiguos API
Date: Mon, 11 Jan 2021 09:36:14 +0100 [thread overview]
Message-ID: <20210111083614.GA27589@lst.de> (raw)
In-Reply-To: <CANiDSCtsOdJUK3r_t8UNKhh7Px0ANNFJkuwM1fBgZ7wnVh0JFA@mail.gmail.com>
On Thu, Jan 07, 2021 at 03:14:08PM +0100, Ricardo Ribalda wrote:
> > So I think we do want these branches for coherent vs non-coherent as they
> > have very different semantics and I do not think that hiding them under
> > the same API helps people to understand those vastly different semantics.
> >
> > OTOH we should look into a fallback for DMA API instances that do not
> > support the discontigous allocations.
> >
> > I think between your comments and those from Ricardo I have a good idea
> > for a somewhat updated API. I'll try to post something in the next days.
>
> Did you have time to look into this?
>
> No hurry, I just want to make sure that I didn't miss anything ;)
Haven't managed to get to it, sorry.
>
> Best regards!
>
>
>
> --
> Ricardo Ribalda
---end quoted text---
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next prev parent reply other threads:[~2021-01-11 8:36 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 22:19 [PATCH v3 5/6] media: uvcvideo: Use dma_alloc_noncontiguos API Ricardo Ribalda
2020-11-26 11:44 ` Sergey Senozhatsky
2020-11-30 8:31 ` Christoph Hellwig
2020-11-30 8:34 ` Christoph Hellwig
2020-11-30 10:49 ` Ricardo Ribalda
2020-12-01 3:36 ` Sergey Senozhatsky
2020-12-01 14:49 ` Christoph Hellwig
2020-12-08 4:54 ` Tomasz Figa
2020-12-08 6:45 ` Sergey Senozhatsky via iommu
2020-12-08 7:13 ` Sergey Senozhatsky
2020-12-09 11:16 ` . Christoph Hellwig
2021-01-07 14:14 ` Ricardo Ribalda
2021-01-11 8:36 ` . Christoph Hellwig [this message]
2021-01-15 13:08 ` Ricardo Ribalda
2021-01-20 17:17 ` . Christoph Hellwig
2021-01-26 17:06 ` . Christoph Hellwig
2021-01-26 23:29 ` Ricardo Ribalda
2021-01-27 15:56 ` . Christoph Hellwig
2021-01-27 21:35 ` Ricardo Ribalda
2021-01-28 7:57 ` . Christoph Hellwig
2020-12-09 11:12 ` Christoph Hellwig
2020-12-09 13:05 ` Robin Murphy
2020-12-10 5:08 ` Tomasz Figa
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