From: "hch@lst.de" <hch@lst.de>
To: Eugeniy Paltsev <eugeniy.paltsev@synopsys.com>
Cc: "hch@lst.de" <hch@lst.de>,
Vineet Gupta <vineet.gupta1@synopsys.com>,
"iommu@lists.linux-foundation.org"
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Subject: Re: ensure dma_alloc_coherent always returns zeroed memory
Date: Thu, 20 Dec 2018 15:34:15 +0100 [thread overview]
Message-ID: <20181220143415.GA17726@lst.de> (raw)
In-Reply-To: <1545316369.14089.20.camel@synopsys.com>
On Thu, Dec 20, 2018 at 02:32:52PM +0000, Eugeniy Paltsev wrote:
> Hi Christoph,
>
> I test kernel from your 'dma-alloc-always-zero' branch, and as
> I can see we have DMA peripherals (like USB) broken.
I would be really surprised if that is caused by the patch to add
the zeroing. Can you check which commit caused the issue by bisecting
from a known good baseline?
next prev parent reply other threads:[~2018-12-20 14:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-14 8:25 ensure dma_alloc_coherent always returns zeroed memory Christoph Hellwig
2018-12-14 8:25 ` [PATCH 1/2] dma-mapping: zero memory returned from dma_alloc_* Christoph Hellwig
2018-12-14 9:54 ` Geert Uytterhoeven
2018-12-14 9:55 ` Geert Uytterhoeven
2018-12-14 11:47 ` Christoph Hellwig
2018-12-14 12:36 ` Geert Uytterhoeven
2018-12-14 14:14 ` Greg Ungerer
2018-12-17 11:59 ` Christoph Hellwig
2018-12-14 12:12 ` Eugeniy Paltsev
2018-12-14 12:21 ` hch
2018-12-14 18:10 ` Sam Ravnborg
2018-12-14 18:35 ` Christoph Hellwig
2018-12-14 8:25 ` [PATCH 2/2] dma-mapping: deprecate dma_zalloc_coherent Christoph Hellwig
2018-12-14 13:33 ` ensure dma_alloc_coherent always returns zeroed memory Christoph Hellwig
2018-12-19 16:59 ` Christoph Hellwig
2018-12-20 14:32 ` Eugeniy Paltsev
2018-12-20 14:34 ` hch [this message]
2018-12-20 14:39 ` Eugeniy Paltsev
2018-12-20 14:46 ` hch
2018-12-20 17:37 ` hch
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