linux-kernel - Re: [PATCH 1/1] iommu: dmar_fault should only clear PPF/PFO field.

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Message-ID: <20130326150305.GC2727@8bytes.org>
Date:	Tue, 26 Mar 2013 16:03:10 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	"Li, Zhen-Hua" <zhen-hual@...com>
Cc:	lizhenhua@...com, Ingo Molnar <mingo@...nel.org>,
	Donald Dutile <ddutile@...hat.com>,
	Hannes Reinecke <hare@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] iommu: dmar_fault should only clear PPF/PFO field.

On Mon, Mar 25, 2013 at 04:20:52PM +0800, Li, Zhen-Hua wrote:
> +	writel(DMA_FSTS_PPF, iommu->reg + DMAR_FSTS_REG);
> +	if (fault_status & DMA_FSTS_PFO)
> +		writel(DMA_FSTS_PFO, iommu->reg + DMAR_FSTS_REG);

Changes this to:

	writel(DMA_FSTS_PFO | DMA_FSTS_PPF, iommu->reg + DMAR_FSTS_REG);

and applied the patch to iommu/vt-d, thanks.


	Joerg


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