From: Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
To: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Vinod Koul <vinod.koul-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Viresh Kumar
<viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
Mark Brown
<broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>,
spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
Andy Shevchenko
<andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH 2/5] spi: pl022: use generic DMA slave configuration if possible
Date: Fri, 8 Feb 2013 16:20:31 +0000 [thread overview]
Message-ID: <20130208162031.GX17833@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <CACRpkdZNpCJwp-uaH6feTcaPesNouwpHt-hO-M9v52G=Ux+Hqw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Thu, Feb 07, 2013 at 07:29:17PM +0100, Linus Walleij wrote:
> Actually I once read about a feature where the kernel provides
> a static page full of zeroes or something like this, that would be
> ideal to use in cases like this, then all of this dummy page
> allocation and freeing can be deleted.
I think you're thinking of empty_zero_page which is used to provide the
initial BSS pages for user apps.
next prev parent reply other threads:[~2013-02-08 16:20 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1359395857-1235-1-git-send-email-arnd@arndb.de>
[not found] ` <1359395857-1235-1-git-send-email-arnd-r2nGTMty4D4@public.gmane.org>
2013-01-28 17:57 ` [PATCH 2/5] spi: pl022: use generic DMA slave configuration if possible Arnd Bergmann
[not found] ` <1359395857-1235-3-git-send-email-arnd-r2nGTMty4D4@public.gmane.org>
2013-02-05 14:22 ` Grant Likely
2013-02-07 18:27 ` Linus Walleij
2013-01-28 17:57 ` [PATCH 3/5] serial: pl011: " Arnd Bergmann
[not found] ` <1359395857-1235-4-git-send-email-arnd-r2nGTMty4D4@public.gmane.org>
2013-02-05 14:22 ` Grant Likely
2013-01-28 21:58 ` [PATCH v2 0/5] dmaengine: convert dw_dmac/spear13xx to generic binding Arnd Bergmann
[not found] ` <1359410300-26113-1-git-send-email-arnd-r2nGTMty4D4@public.gmane.org>
2013-01-28 21:58 ` [PATCH 2/5] spi: pl022: use generic DMA slave configuration if possible Arnd Bergmann
[not found] ` <1359410300-26113-3-git-send-email-arnd-r2nGTMty4D4@public.gmane.org>
2013-01-29 2:41 ` Mark Brown
2013-01-29 7:49 ` Andy Shevchenko
2013-01-29 13:13 ` Arnd Bergmann
[not found] ` <201301291313.03511.arnd-r2nGTMty4D4@public.gmane.org>
2013-02-07 18:29 ` Linus Walleij
[not found] ` <CACRpkdZNpCJwp-uaH6feTcaPesNouwpHt-hO-M9v52G=Ux+Hqw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-02-07 19:42 ` Arnd Bergmann
[not found] ` <201302071942.54642.arnd-r2nGTMty4D4@public.gmane.org>
2013-02-07 20:19 ` Linus Walleij
[not found] ` <CACRpkdbunPGtR4p_kY4q8WEb8iwkEbdo_icDyrLZwKrCe0wXqw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-02-07 21:15 ` Arnd Bergmann
2013-02-08 16:22 ` Russell King - ARM Linux
2013-02-08 16:28 ` Arnd Bergmann
2013-02-08 22:10 ` Linus Walleij
2013-02-08 16:20 ` Russell King - ARM Linux [this message]
2013-01-28 21:58 ` [PATCH 3/5] serial: pl011: " Arnd Bergmann
[not found] ` <1359410300-26113-4-git-send-email-arnd-r2nGTMty4D4@public.gmane.org>
2013-01-30 4:38 ` Greg Kroah-Hartman
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