From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V3 3/4] ARM: Xilinx: base header files and assembly macros
Date: Thu, 17 Feb 2011 16:18:44 +0100 [thread overview]
Message-ID: <201102171618.44269.arnd@arndb.de> (raw)
In-Reply-To: <20110217151223.GJ24627@n2100.arm.linux.org.uk>
On Thursday 17 February 2011, Russell King - ARM Linux wrote:
> > Actually, for correctness you should use the regular readl/writel, not
> > the __raw_ versions, which can result in reordered or partial accesses
> > on the bus.
>
> Not in the decompressor. readl/writel are unsupported there - the
> decompressor doesn't have the L2 cache support code and so the barriers
> necessary for readl/writel cause link errors.
Ah right, of course. Sorry for the confusion.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: "Russell King - ARM Linux" <linux@arm.linux.org.uk>
Cc: John Linn <John.Linn@xilinx.com>,
Jamie Iles <jamie@jamieiles.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, catalin.marinas@arm.com,
glikely@secretlab.ca
Subject: Re: [PATCH V3 3/4] ARM: Xilinx: base header files and assembly macros
Date: Thu, 17 Feb 2011 16:18:44 +0100 [thread overview]
Message-ID: <201102171618.44269.arnd@arndb.de> (raw)
In-Reply-To: <20110217151223.GJ24627@n2100.arm.linux.org.uk>
On Thursday 17 February 2011, Russell King - ARM Linux wrote:
> > Actually, for correctness you should use the regular readl/writel, not
> > the __raw_ versions, which can result in reordered or partial accesses
> > on the bus.
>
> Not in the decompressor. readl/writel are unsupported there - the
> decompressor doesn't have the L2 cache support code and so the barriers
> necessary for readl/writel cause link errors.
Ah right, of course. Sorry for the confusion.
Arnd
next prev parent reply other threads:[~2011-02-17 15:18 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1297872716-13353-1-git-send-email-john.linn@xilinx.com>
2011-02-16 16:11 ` [PATCH V3 1/4] ARM: Xilinx: Adding Xilinx board support John Linn
2011-02-16 16:11 ` John Linn
2011-02-17 9:34 ` Jamie Iles
2011-02-17 9:34 ` Jamie Iles
2011-02-17 14:24 ` John Linn
2011-02-17 14:24 ` John Linn
[not found] ` <1297872716-13353-2-git-send-email-john.linn@xilinx.com>
2011-02-16 16:11 ` [PATCH V3 2/4] ARM: Xilinx: Adding timer support to the platform John Linn
2011-02-16 16:11 ` John Linn
2011-02-17 9:48 ` Jamie Iles
2011-02-17 9:48 ` Jamie Iles
2011-02-17 14:27 ` John Linn
2011-02-17 14:27 ` John Linn
[not found] ` <1297872716-13353-3-git-send-email-john.linn@xilinx.com>
2011-02-16 16:11 ` [PATCH V3 3/4] ARM: Xilinx: base header files and assembly macros John Linn
2011-02-16 16:11 ` John Linn
2011-02-17 10:01 ` Jamie Iles
2011-02-17 10:01 ` Jamie Iles
2011-02-17 14:31 ` John Linn
2011-02-17 14:31 ` John Linn
2011-02-17 14:41 ` Arnd Bergmann
2011-02-17 14:41 ` Arnd Bergmann
2011-02-17 15:12 ` Russell King - ARM Linux
2011-02-17 15:12 ` Russell King - ARM Linux
2011-02-17 15:18 ` Arnd Bergmann [this message]
2011-02-17 15:18 ` Arnd Bergmann
2011-02-17 21:58 ` Stephen Boyd
2011-02-17 21:58 ` Stephen Boyd
2011-02-18 1:29 ` John Linn
2011-02-18 1:29 ` John Linn
2011-02-18 0:37 ` John Linn
2011-02-18 0:37 ` John Linn
2011-02-18 0:45 ` Jamie Iles
2011-02-18 0:45 ` Jamie Iles
2011-02-18 1:19 ` John Linn
2011-02-18 1:19 ` John Linn
2011-02-18 9:06 ` Jamie Iles
2011-02-18 9:06 ` Jamie Iles
2011-02-18 13:59 ` John Linn
2011-02-18 13:59 ` John Linn
2011-02-18 14:28 ` John Linn
2011-02-18 14:28 ` John Linn
[not found] ` <1297872716-13353-4-git-send-email-john.linn@xilinx.com>
2011-02-16 16:11 ` [PATCH V3 4/4] ARM: Xilinx: Adding Xilinx platform infrastructure support John Linn
2011-02-16 16:11 ` John Linn
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