From: Krzysztof Halasa <khc-9GfyWEdoJtJmR6Xm/wNWPw@public.gmane.org>
To: Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
Cc: Lior Amsalem <alior-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Andrew Lunn <andrew-g2DYL2Zd6BY@public.gmane.org>,
Ike Pan <ike.pan-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>,
David Marlin <dmarlin-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Yehuda Yitschak <yehuday-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Tawfik Bayouk <tawfik-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Dan Frazier
<dann.frazier-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>,
Eran Ben-Avi <benavi-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Leif Lindholm <leif.lindholm-5wv7dgnIgG8@public.gmane.org>,
Sebastian Hesselbarth
<sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>,
Jon Masters <jcm-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
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linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Chris Van Hoof <vanhoof-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>,
Nadav Haklai <nadavh@marve>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Maen Suleiman <maen-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Shadi Ammouri <shadi-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
Subject: Re: [PATCH 2/5] arm: mvebu: Select DMA_BOUNCE when LPAE is selected in Kconfig
Date: Sat, 23 Mar 2013 20:48:16 +0100 [thread overview]
Message-ID: <m3boa96gov.fsf@intrepid.localdomain> (raw)
In-Reply-To: <20130322113251.GB4977-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org> (Russell King's message of "Fri, 22 Mar 2013 11:32:51 +0000")
Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org> writes:
> Oh god no. Please move away from the addition on DMABOUNCE - that code
> creaks, doesn't have highmem support, and is known to give problems on
> various platforms.
>
> Instead, please rely on using the DMA mask and such like, just like on
> x86.
It still needs some sort of bouncing (for data passed to the device from
upper levels). I wonder if swiotlb doesn't do the same thing.
--
Krzysztof Halasa
next prev parent reply other threads:[~2013-03-23 19:48 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-21 16:26 [PATCH 0/5] arm: mvebu: Enable LPAE support for Armada XP SoCs Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` [PATCH 1/5] arm: mvebu: Aligne the internal registers virtual base to support LPAE Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` [PATCH 2/5] arm: mvebu: Select DMA_BOUNCE when LPAE is selected in Kconfig Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 18:19 ` Rob Herring
2013-03-21 18:19 ` Rob Herring
2013-03-21 19:18 ` Andrew Lunn
2013-03-21 19:18 ` Andrew Lunn
2013-03-21 19:18 ` Andrew Lunn
2013-03-22 11:32 ` Russell King - ARM Linux
2013-03-22 11:32 ` Russell King - ARM Linux
2013-03-22 11:32 ` Russell King - ARM Linux
[not found] ` <20130322113251.GB4977-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2013-03-23 19:48 ` Krzysztof Halasa [this message]
2013-03-21 16:26 ` [PATCH 3/5] arm: mvebu: Enable pj4b on LPAE compilations Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` [PATCH 4/5] arm: dts: Add a 64 bits version of the skeleton device tree Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` [PATCH 5/5] arm: dts: Convert mvebu device tree files to 64 bits Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 16:26 ` Gregory CLEMENT
2013-03-21 17:59 ` Rob Herring
2013-03-21 17:59 ` Rob Herring
2013-03-21 17:59 ` Rob Herring
2013-03-21 19:03 ` Arnd Bergmann
2013-03-21 19:03 ` Arnd Bergmann
2013-03-21 19:03 ` Arnd Bergmann
2013-03-21 19:18 ` Thomas Petazzoni
2013-03-21 19:18 ` Thomas Petazzoni
2013-03-21 19:18 ` Thomas Petazzoni
2013-03-21 21:31 ` Arnd Bergmann
2013-03-21 21:31 ` Arnd Bergmann
2013-03-21 21:31 ` Arnd Bergmann
2013-03-21 22:30 ` Sebastian Hesselbarth
2013-03-21 22:30 ` Sebastian Hesselbarth
2013-03-21 22:30 ` Sebastian Hesselbarth
2013-03-21 20:15 ` Andrew Lunn
2013-03-21 20:15 ` Andrew Lunn
2013-03-21 20:15 ` Andrew Lunn
2013-03-21 20:22 ` Thomas Petazzoni
2013-03-21 20:22 ` Thomas Petazzoni
2013-03-21 20:22 ` Thomas Petazzoni
2013-03-21 20:30 ` Jason Cooper
2013-03-21 20:30 ` Jason Cooper
2013-03-21 20:30 ` Jason Cooper
2013-03-21 20:37 ` Andrew Lunn
2013-03-21 20:37 ` Andrew Lunn
2013-03-21 20:37 ` Andrew Lunn
2013-03-21 21:08 ` Thomas Petazzoni
2013-03-21 21:08 ` Thomas Petazzoni
2013-03-21 21:08 ` Thomas Petazzoni
2013-03-21 21:16 ` Thomas Petazzoni
2013-03-21 21:16 ` Thomas Petazzoni
2013-03-21 21:16 ` Thomas Petazzoni
2013-03-21 20:55 ` Jason Gunthorpe
2013-03-21 20:55 ` Jason Gunthorpe
2013-03-21 20:55 ` Jason Gunthorpe
2013-03-21 21:15 ` Thomas Petazzoni
2013-03-21 21:15 ` Thomas Petazzoni
2013-03-21 21:15 ` Thomas Petazzoni
2013-03-21 21:35 ` Lior Amsalem
2013-03-21 21:35 ` Lior Amsalem
2013-03-21 21:46 ` Jason Gunthorpe
2013-03-21 21:46 ` Jason Gunthorpe
2013-03-21 21:58 ` Lior Amsalem
2013-03-21 21:58 ` Lior Amsalem
2013-03-22 6:55 ` Arnd Bergmann
2013-03-22 6:55 ` Arnd Bergmann
2013-03-21 21:41 ` Jason Gunthorpe
2013-03-21 21:41 ` Jason Gunthorpe
2013-03-21 21:41 ` Jason Gunthorpe
2013-03-21 22:26 ` Sebastian Hesselbarth
2013-03-21 22:26 ` Sebastian Hesselbarth
2013-03-21 22:26 ` Sebastian Hesselbarth
2013-03-22 9:55 ` Arnd Bergmann
2013-03-22 9:55 ` Arnd Bergmann
2013-03-21 21:25 ` Andrew Lunn
2013-03-21 21:25 ` Andrew Lunn
2013-03-22 6:28 ` Andrew Lunn
2013-03-22 6:28 ` Andrew Lunn
2013-03-22 17:43 ` Jason Gunthorpe
2013-03-22 17:43 ` Jason Gunthorpe
2013-03-22 19:33 ` Arnd Bergmann
2013-03-22 19:33 ` Arnd Bergmann
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