Re: [RFT PATCH v3 11/27] arm64: Implement ioremap_np() to map MMIO as nGnRnE

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To: Hector Martin <marcan@xxxxxxxxx>
Subject: Re: [RFT PATCH v3 11/27] arm64: Implement ioremap_np() to map MMIO as nGnRnE
From: Marc Zyngier <maz@xxxxxxxxxx>
Date: Mon, 08 Mar 2021 11:22:54 +0000
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, Rob Herring <robh@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxxxx>, Olof Johansson <olof@xxxxxxxxx>, Krzysztof Kozlowski <krzk@xxxxxxxxxx>, Mark Kettenis <mark.kettenis@xxxxxxxxx>, Tony Lindgren <tony@xxxxxxxxxxx>, Mohamed Mediouni <mohamed.mediouni@xxxxxxxxxxxx>, Stan Skowronek <stan@xxxxxxxxxxxxx>, Alexander Graf <graf@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Linus Walleij <linus.walleij@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Andy Shevchenko <andy.shevchenko@xxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, devicetree@xxxxxxxxxxxxxxx, linux-serial@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-samsung-soc@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20210304213902.83903-12-marcan@marcan.st>
References: <20210304213902.83903-1-marcan@marcan.st> <20210304213902.83903-12-marcan@marcan.st>
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On Thu, 04 Mar 2021 21:38:46 +0000,
Hector Martin <marcan@xxxxxxxxx> wrote:
> 
> This is used on Apple ARM platforms, which require most MMIO
> (except PCI devices) to be mapped as nGnRnE.
> 
> Signed-off-by: Hector Martin <marcan@xxxxxxxxx>

Acked-by: Marc Zyngier <maz@xxxxxxxxxx>

	M.

-- 
Without deviation from the norm, progress is not possible.

References:
- [RFT PATCH v3 00/27] Apple M1 SoC platform bring-up
  - From: Hector Martin
- [RFT PATCH v3 11/27] arm64: Implement ioremap_np() to map MMIO as nGnRnE
  - From: Hector Martin

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