From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Paul Burton <paul.burton@mips.com>, Christoph Hellwig <hch@lst.de>
Cc: linux-mips@linux-mips.org
Subject: dma_pool broken on MIPS generic?
Date: Fri, 9 Nov 2018 14:10:14 +0100 [thread overview]
Message-ID: <20181109131014.GA29768@piout.net> (raw)
Hello,
I'm working on a (not yet upstreamed) dmaengine driver. While rebasing
from v4.19 to v4.20-rc1, I saw that it is not working properly anymore
because dma_pool is allocating descriptors in kseg0 which is cached
while in v4.19, it was allocating them in kseg1.
Am I missing something to explicitely state that the cache is not dma
coherent? How could I track this behaviour change?
--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
next reply other threads:[~2018-11-09 13:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-09 13:10 Alexandre Belloni [this message]
2018-11-09 13:24 ` dma_pool broken on MIPS generic? Christoph Hellwig
2018-11-09 13:45 ` Alexandre Belloni
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