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Message-ID: <50FFFCA5.1010309@amd.com>
Date: Wed, 23 Jan 2013 09:07:17 -0600
From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
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To: Joerg Roedel <joro@8bytes.org>
CC: <iommu@lists.linux-foundation.org>, Borislav Petkov <bp@alien8.de>,
        <linux-kernel@vger.kernel.org>, Udo van den Heuvel <udovdh@xs4all.nl>,
        <ssg.sos.staff@mpdtxmail.amd.com>
Subject: Re: [PATCH 1/1] AMD Family15h Model10-1Fh erratum 746 Workaround
References: <1358896750-5199-1-git-send-email-suravee.suthikulpanit@amd.com> <20130123070604.GT25591@8bytes.org>
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On 1/23/2013 1:06 AM, Joerg Roedel wrote:

> On Tue, Jan 22, 2013 at 05:19:10PM -0600, Suthikulpanit, Suravee wrote:
>> From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
>> @@ -1171,6 +1195,8 @@ static int iommu_init_pci(struct amd_iommu *iommu)
>>   		for (i = 0; i < 0x83; i++)
>>   			iommu->stored_l2[i] = iommu_read_l2(iommu, i);
>>   	}
>> +	
>> +	amd_iommu_apply_erratum_746(iommu);
> This will also be applied to RD890 IOMMUs, right? This workaround should
> be limited to Trinity IOMMUs.

Inside the function, it checks the family and model number.  Only Trinitiy is affected.

Suravee