linux-kernel - Re: [PATCH 1/1] x86/iommu: use bit structures for context

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Message-ID: <20140107144108.GF2742@8bytes.org>
Date:	Tue, 7 Jan 2014 15:41:09 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	"Li, Zhen-Hua" <zhen-hual@...com>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] x86/iommu: use bit structures for context_entry

On Fri, Dec 20, 2013 at 04:45:01PM +0800, Li, Zhen-Hua wrote:
> There is a structure named context_entry used by intel iommu, and there
> are some bit operations on it. Use bit structure may make these operations
> easy.
> Also the function context_set_address_root may cause problem because it uses
>  |= operation, not set the new value. And this patch can fix it.

What is the problem you are trying to fix here? Is it an actual bug?


	Joerg


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