LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Arend van Spriel <arend@broadcom.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Arnd Bergmann <arnd@arndb.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
brcm80211-dev-list <brcm80211-dev-list@broadcom.com>,
linux-wireless <linux-wireless@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Will Deacon <Will.Deacon@arm.com>,
Hante Meuleman <meuleman@broadcom.com>,
"hauke@hauke-m.de" <hauke@hauke-m.de>,
David Miller <davem@davemloft.net>,
Marek Szyprowski <m.szyprowski@samsung.com>
Subject: Re: using DMA-API on ARM
Date: Tue, 9 Dec 2014 10:29:05 +0000 [thread overview]
Message-ID: <20141209102904.GJ11285@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <5486CCBC.3@broadcom.com>
On Tue, Dec 09, 2014 at 11:19:40AM +0100, Arend van Spriel wrote:
> The issue did not trigger overnight so it seems setting bit 22 <Shared
> Attribute _Override_ Enable> solves the issue over here. Now the question is
> how to move forward with this. As I understood from Catalin this patch was
> not included as it was not considered responsibility of the linux kernel.
It is preferable for firmware to configure the L2 cache appropriately,
which includes things like the prefetch offsets as well as feature bits
like bit 22.
I think what I'll do is queue up a patch which adds a warning if bit 22
is not set, suggesting that firmware is updated to set this bit.
--
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2014-12-09 10:29 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-05 9:22 Arend van Spriel
2014-12-05 9:45 ` Russell King - ARM Linux
2014-12-05 12:24 ` Will Deacon
2014-12-05 12:56 ` Hante Meuleman
2014-12-05 13:23 ` Russell King - ARM Linux
2014-12-05 14:20 ` Hante Meuleman
2014-12-05 14:47 ` Arend van Spriel
2014-12-08 13:47 ` Hante Meuleman
2014-12-08 15:01 ` Arnd Bergmann
2014-12-08 15:17 ` Russell King - ARM Linux
2014-12-08 15:22 ` Arnd Bergmann
2014-12-08 16:03 ` Catalin Marinas
2014-12-08 17:01 ` Arend van Spriel
2014-12-09 10:19 ` Arend van Spriel
2014-12-09 10:29 ` Russell King - ARM Linux [this message]
2014-12-09 11:07 ` Arend van Spriel
2014-12-09 11:54 ` Catalin Marinas
2015-01-20 15:22 ` Fabio Estevam
2014-12-08 16:22 ` Arend van Spriel
2014-12-08 16:38 ` Arnd Bergmann
2014-12-08 16:47 ` Russell King - ARM Linux
2014-12-08 16:50 ` Catalin Marinas
2014-12-08 16:54 ` Russell King - ARM Linux
2014-12-05 15:06 ` Russell King - ARM Linux
2014-12-05 18:28 ` Catalin Marinas
2014-12-05 19:22 ` Arend van Spriel
2014-12-05 19:25 ` Russell King - ARM Linux
2014-12-05 12:43 ` Arend van Spriel
2014-12-05 12:59 ` Russell King - ARM Linux
2014-12-05 9:52 ` Arnd Bergmann
2014-12-05 11:11 ` Russell King - ARM Linux
2014-12-05 11:49 ` Hante Meuleman
2014-12-05 17:38 ` Catalin Marinas
2014-12-05 18:24 ` Russell King - ARM Linux
2014-12-05 18:31 ` Catalin Marinas
2014-12-05 18:39 ` Catalin Marinas
2014-12-05 18:53 ` Catalin Marinas
2014-12-05 19:50 ` Arend van Spriel
2014-12-08 12:55 ` Johannes Stezenbach
2014-12-08 15:55 ` Catalin Marinas
2014-12-08 16:50 ` Johannes Stezenbach
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20141209102904.GJ11285@n2100.arm.linux.org.uk \
--to=linux@arm.linux.org.uk \
--cc=Will.Deacon@arm.com \
--cc=arend@broadcom.com \
--cc=arnd@arndb.de \
--cc=brcm80211-dev-list@broadcom.com \
--cc=catalin.marinas@arm.com \
--cc=davem@davemloft.net \
--cc=hauke@hauke-m.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=m.szyprowski@samsung.com \
--cc=meuleman@broadcom.com \
--subject='Re: using DMA-API on ARM' \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).