linux-kernel - RE: [PATCH v7 3/9] iommu/exynos: fix page table maintenance

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Message-id: <002101ce8225$775a71e0$660f55a0$@samsung.com>
Date:	Tue, 16 Jul 2013 22:07:46 +0900
From:	Cho KyongHo <pullip.cho@...sung.com>
To:	'Grant Grundler' <grundler@...omium.org>
Cc:	'Bartlomiej Zolnierkiewicz' <b.zolnierkie@...sung.com>,
	'Linux ARM Kernel' <linux-arm-kernel@...ts.infradead.org>,
	'Linux IOMMU' <iommu@...ts.linux-foundation.org>,
	'Linux Kernel' <linux-kernel@...r.kernel.org>,
	'Linux Samsung SOC' <linux-samsung-soc@...r.kernel.org>,
	'Hyunwoong Kim' <khw0178.kim@...sung.com>,
	'Joerg Roedel' <joro@...tes.org>,
	'Kukjin Kim' <kgene.kim@...sung.com>,
	'Prathyush' <prathyush.k@...sung.com>,
	'Rahul Sharma' <rahul.sharma@...sung.com>,
	'Subash Patel' <supash.ramaswamy@...aro.org>,
	'Keyyoung Park' <keyyoung.park@...sung.com>
Subject: RE: [PATCH v7 3/9] iommu/exynos: fix page table maintenance

> From: grundler@...gle.com [mailto:grundler@...gle.com] On Behalf Of Grant Grundler
> Sent: Tuesday, July 16, 2013 1:19 AM
> 
> On Mon, Jul 15, 2013 at 4:21 AM, Cho KyongHo <pullip.cho@...sung.com> wrote:
> ...
> >> Maybe you could add LV1TABLE_SIZE define and use it here (there is
> >> already a LV2TABLE_SIZE define)?
> >
> > Yes. But, LV2TABLE_SIZE is used in more places than one.
> > I do not feel that it is needed to define LV1TABLE_SIZE for the single line.
> 
> Cho,
> #define's are part of the code "documentation". Doesn't really matter
> how often it's used. I think Bartlomiej's suggestion is a good one.
> 
> Key is to use "consistent" names so they makes sense to someone not
> familiar with the code. In this case, we want to show this use is the
> same way LV2TABLE_SIZE is used and serves the same purpose.
> 
Ok.
I agree the error handling code is not pretty to understand.
I will change it in the next patch.

> cheers.
> grant

Thank you.

Cho KyongHo.

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