From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/6] irqchip: gic: use writel instead of dsb + writel_relaxed
Date: Thu, 06 Feb 2014 11:39:13 +0000 [thread overview]
Message-ID: <52F37461.8020504@arm.com> (raw)
In-Reply-To: <1391686253-13436-3-git-send-email-will.deacon@arm.com>
On 06/02/14 11:30, Will Deacon wrote:
> When sending an SGI to another CPU, we require a DSB to ensure that
> any pending stores to normal memory are made visible to the recipient
> before the interrupt arrives.
>
> Rather than use a dsb() (which will soon cause an assembly error on
> arm64) followed by a writel_relaxed, we can use a writel instead, which
> will emit a dsb st prior to the str.
>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Marc Zyngier <marc.zyngier@arm.com>
> Signed-off-by: Will Deacon <will.deacon@arm.com>
Looks sensible to me.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2014-02-06 11:39 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-06 11:30 [PATCH 1/6] arm64: barriers: allow dsb macro to take option parameter Will Deacon
2014-02-06 11:30 ` [PATCH 2/6] arm64: barriers: make use of barrier options with explicit barriers Will Deacon
2014-02-06 11:41 ` Catalin Marinas
2014-02-06 11:45 ` Will Deacon
2014-02-06 11:49 ` Catalin Marinas
2014-02-06 11:52 ` Will Deacon
2014-02-06 11:30 ` [PATCH 3/6] irqchip: gic: use writel instead of dsb + writel_relaxed Will Deacon
2014-02-06 11:39 ` Marc Zyngier [this message]
2014-02-06 11:45 ` Catalin Marinas
2014-02-06 11:51 ` Will Deacon
2014-02-06 11:54 ` Catalin Marinas
2014-02-06 11:57 ` Will Deacon
2014-02-06 12:00 ` Catalin Marinas
2014-02-06 12:13 ` Will Deacon
2014-02-06 12:23 ` Catalin Marinas
2014-02-06 13:26 ` Will Deacon
2014-02-06 15:20 ` Catalin Marinas
2014-02-07 11:23 ` Will Deacon
2014-02-07 12:57 ` Catalin Marinas
2014-02-14 16:30 ` Will Deacon
2014-02-14 16:48 ` Catalin Marinas
2014-02-14 17:18 ` Rob Herring
2014-02-06 11:30 ` [PATCH 4/6] iommu/arm-smmu: provide option to dsb macro when publishing tables Will Deacon
2014-02-06 11:51 ` Catalin Marinas
2014-02-06 11:30 ` [PATCH 5/6] arm64: barriers: wire up new barrier options Will Deacon
2014-02-06 11:55 ` Catalin Marinas
2014-02-06 11:30 ` [PATCH 6/6] arm64: barriers: use barrier() instead of smp_mb() when !SMP Will Deacon
2014-02-06 11:56 ` Catalin Marinas
2014-02-06 11:39 ` [PATCH 1/6] arm64: barriers: allow dsb macro to take option parameter Catalin Marinas
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=52F37461.8020504@arm.com \
--to=marc.zyngier@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.