From: swarren@wwwdotorg.org (Stephen Warren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] irqchip: bcm2836: Use a more generic memory barrier call
Date: Tue, 5 Apr 2016 22:59:51 -0600 [thread overview]
Message-ID: <570497C7.10501@wwwdotorg.org> (raw)
In-Reply-To: <1459827858-3871-5-git-send-email-eric@anholt.net>
On 04/04/2016 09:44 PM, Eric Anholt wrote:
> dsb() requires an argument on arm64, so we needed to add "sy".
> Instead, take this opportunity to switch to the same smp_wmb() call
> that gic uses for its IPIs. This is a less strong barrier than we
> were doing before (dmb(ishst) compared to dsb(sy)), but it seems to be
> the correct one.
I assume all MMIO is part of the ish domain?
If so, the series,
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
WARNING: multiple messages have this Message-ID (diff)
From: Stephen Warren <swarren@wwwdotorg.org>
To: Eric Anholt <eric@anholt.net>
Cc: linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Lee Jones <lee@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <marc.zyngier@arm.com>
Subject: Re: [PATCH 4/4] irqchip: bcm2836: Use a more generic memory barrier call
Date: Tue, 5 Apr 2016 22:59:51 -0600 [thread overview]
Message-ID: <570497C7.10501@wwwdotorg.org> (raw)
In-Reply-To: <1459827858-3871-5-git-send-email-eric@anholt.net>
On 04/04/2016 09:44 PM, Eric Anholt wrote:
> dsb() requires an argument on arm64, so we needed to add "sy".
> Instead, take this opportunity to switch to the same smp_wmb() call
> that gic uses for its IPIs. This is a less strong barrier than we
> were doing before (dmb(ishst) compared to dsb(sy)), but it seems to be
> the correct one.
I assume all MMIO is part of the ish domain?
If so, the series,
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
next prev parent reply other threads:[~2016-04-06 4:59 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 3:44 [PATCH 0/4] irqchip: bcm2835: arm64 port Eric Anholt
2016-04-05 3:44 ` Eric Anholt
2016-04-05 3:44 ` [PATCH 1/4] irqchip: bcm2835: Avoid arch/arm-specific handle_IRQ Eric Anholt
2016-04-05 3:44 ` Eric Anholt
2016-04-05 3:44 ` [PATCH 2/4] irqchip: bcm2836: Drop smp_set_ops on arm64 builds Eric Anholt
2016-04-05 3:44 ` Eric Anholt
2016-04-05 13:44 ` Marc Zyngier
2016-04-05 13:44 ` Marc Zyngier
2016-04-08 20:43 ` Arnd Bergmann
2016-04-08 20:43 ` Arnd Bergmann
2016-04-13 19:49 ` Eric Anholt
2016-04-13 19:49 ` Eric Anholt
2016-04-05 3:44 ` [PATCH 3/4] irqchip: bcm2836: Fix compiler warning on 64-bit build Eric Anholt
2016-04-05 3:44 ` Eric Anholt
2016-04-05 3:44 ` [PATCH 4/4] irqchip: bcm2836: Use a more generic memory barrier call Eric Anholt
2016-04-05 3:44 ` Eric Anholt
2016-04-06 4:59 ` Stephen Warren [this message]
2016-04-06 4:59 ` Stephen Warren
2016-04-08 18:20 ` Eric Anholt
2016-04-08 18:20 ` Eric Anholt
2016-04-09 5:26 ` Stephen Warren
2016-04-09 5:26 ` Stephen Warren
2016-04-10 18:32 ` Eric Anholt
2016-04-10 18:32 ` Eric Anholt
2016-04-11 15:52 ` Stephen Warren
2016-04-11 15:52 ` Stephen Warren
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