linux-kernel - Re: [PATCH v2 5/6] iommu/intel: announce supported page sizes

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Message-ID: <1315949582.2687.204.camel@shinybook.infradead.org>
Date:	Tue, 13 Sep 2011 22:32:59 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Ohad Ben-Cohen <ohad@...ery.com>
Cc:	iommu@...ts.linux-foundation.org, linux-omap@...r.kernel.org,
	Hiroshi DOYU <Hiroshi.DOYU@...ia.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Joerg Roedel <Joerg.Roedel@....com>,
	linux-arm-kernel@...ts.infradead.org,
	David Brown <davidb@...eaurora.org>,
	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/6] iommu/intel: announce supported page sizes

On Tue, 2011-09-13 at 22:31 +0300, Ohad Ben-Cohen wrote:
> + * Traditionally the IOMMU core just handed us the mappings directly,
> + * after making sure the size is an order of a 4KB page and that the
> + * mapping has natural alignment.
> + *
> + * To retain this behavior, we currently advertise that we support
> + * all page sizes that are an order of 4KB. 

This is wrong. We do not support 4000-byte pages. We only support
4096-byte pages. 4KiB, not 4kB.

Please fix.

-- 
dwmw2

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