linux-kernel - Re: [PATCH V8 3/5] arm64: mm: add PROT_DEVICE_nGnRnE and PROT_NORMAL

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Message-ID: <20150727091902.GA29945@e104818-lin.cambridge.arm.com>
Date:	Mon, 27 Jul 2015 10:19:02 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	"Jonathan (Zhixiong) Zhang" <zjzhang@...eaurora.org>
Cc:	Will Deacon <Will.Deacon@....com>,
	"fu.wei@...aro.org" <fu.wei@...aro.org>,
	"al.stone@...aro.org" <al.stone@...aro.org>,
	"bp @ alien8 . de Matt Fleming" <matt.fleming@...el.com>,
	"rjw@...ysocki.net" <rjw@...ysocki.net>,
	"ard.biesheuvel@...aro.org" <ard.biesheuvel@...aro.org>,
	"leif.lindholm@...aro.org" <leif.lindholm@...aro.org>,
	"hanjun.guo@...aro.org" <hanjun.guo@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>,
	"timur@...eaurora.org" <timur@...eaurora.org>
Subject: Re: [PATCH V8 3/5] arm64: mm: add PROT_DEVICE_nGnRnE and
 PROT_NORMAL_WT

On Sat, Jul 25, 2015 at 12:51:07AM +0100, Jonathan (Zhixiong) Zhang wrote:
> From: "Jonathan (Zhixiong) Zhang" <zjzhang@...eaurora.org>
> 
> UEFI spec 2.5 section 2.3.6.1 defines that EFI_MEMORY_[UC|WC|WT|WB] are
> possible EFI memory types for AArch64. Each of those EFI memory types
> is mapped to a corresponding AArch64 memory type. So we need to define
> PROT_DEVICE_nGnRnE and PROT_NORMWL_WT additionaly.
> 
> MT_NORMAL_WT is defined, and its encoding is added to MAIR_EL1 when
> initializing cpu.
> 
> Change-Id: I20ac71ddf74c17e41769ecbb5f8c60eeefbb398a
> Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@...eaurora.org>

Please drop this Change-Id, it doesn't have any relevance to us.

Otherwise:

Reviewed-by: Catalin Marinas <catalin.marinas@....com>

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