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        Jacob Pan <jacob.jun.pan@linux.intel.com>
Subject: Re: [PATCH v3 08/10] iommu/vt-d: Check whether device requires bounce
 buffer
To:     Christoph Hellwig <hch@lst.de>
References: <20190421011719.14909-1-baolu.lu@linux.intel.com>
 <20190421011719.14909-9-baolu.lu@linux.intel.com>
 <20190422164755.GC31181@lst.de>
 <76e35340-32c3-ee0d-5232-bd8800248402@linux.intel.com>
 <20190423060858.GA12762@lst.de>
From:   Lu Baolu <baolu.lu@linux.intel.com>
Message-ID: <e11489cf-87cc-a956-7c6c-ffdd26a4e3ec@linux.intel.com>
Date:   Tue, 23 Apr 2019 15:35:51 +0800
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Hi,

On 4/23/19 2:08 PM, Christoph Hellwig wrote:
>>> Again, this and the option should not be in a specific iommu driver.
>>>
>>
>> The option of whether bounce is ignored should be in the specific iommu
>> driver.
> 
> Why?  As a user I could not care less which IOMMU driver my particular
> system uses.
> 

Looks reasonable to me. Let's listen to more opinions.

Best regards,
Lu Baolu