From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH 09/10] iommu/amd: Clear the iommu pre enabled setting
Date: Tue, 29 Sep 2015 18:09:49 +0200
Message-ID: <20150929160949.GP3036@8bytes.org>
References: <1443076656-31776-1-git-send-email-bhe@redhat.com>
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To: Baoquan He <bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
List-Id: iommu@lists.linux-foundation.org

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