linux-kernel - Re: [PATCH 02/14] arm64: Handle section maps for swapper/idmap

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Message-ID: <55E6C4A2.7080307@arm.com>
Date:	Wed, 02 Sep 2015 10:42:58 +0100
From:	"Suzuki K. Poulose" <Suzuki.Poulose@....com>
To:	Ard Biesheuvel <ard.biesheuvel@...aro.org>
CC:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	KVM devel mailing list <kvm@...r.kernel.org>,
	"kvmarm@...ts.cs.columbia.edu" <kvmarm@...ts.cs.columbia.edu>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <Will.Deacon@....com>,
	Mark Rutland <Mark.Rutland@....com>,
	Marc Zyngier <Marc.Zyngier@....com>
Subject: Re: [PATCH 02/14] arm64: Handle section maps for swapper/idmap

On 02/09/15 10:38, Ard Biesheuvel wrote:
> On 13 August 2015 at 13:33, Suzuki K. Poulose <suzuki.poulose@....com> wrote:
>> From: "Suzuki K. Poulose" <suzuki.poulose@....com>
>>
>> We use section maps with 4K page size to create the
>> swapper/idmaps. So far we have used !64K or 4K checks
>> to handle the case where we use the section maps. This
>> patch adds a symbol to make it clear those cases.
>>
>
> That sentence does not make sense.

I agree. How about :

"This patch adds a new symbol, 'ARM64_SWAPPER_USES_SECTION_MAPS', to
handle cases where we use section maps, instead of using the page size
symbols."

Suzuki


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