linux-kernel - Re: [PATCH 09/10] iommu/amd: Clear the iommu pre enabled setting

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Date:	Tue, 29 Sep 2015 18:09:49 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	Baoquan He <bhe@...hat.com>
Cc:	iommu@...ts.linux-foundation.org, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/10] iommu/amd: Clear the iommu pre enabled setting

On Thu, Sep 24, 2015 at 02:37:35PM +0800, Baoquan He wrote:
> @@ -2469,6 +2469,8 @@ static dma_addr_t __map_single(struct device *dev,
>  	unsigned long align_mask = 0;
>  	int i;
>  
> +	if (translation_pre_enabled())
> +		clear_translation_pre_enabled();

There is probably a better place to do this somewhere in the
initialization state machine of the AMD IOMMU driver.


	Joerg

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