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Subject: Re: [PATCH v3 07/10] iommu/vt-d: Keep swiotlb on if bounce page is
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To:     Christoph Hellwig <hch@lst.de>
References: <20190421011719.14909-1-baolu.lu@linux.intel.com>
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 <20190422164720.GB31181@lst.de>
From:   Lu Baolu <baolu.lu@linux.intel.com>
Message-ID: <68192a07-4eac-4b2e-5c23-075defde9f34@linux.intel.com>
Date:   Tue, 23 Apr 2019 10:00:32 +0800
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Hi,

On 4/23/19 12:47 AM, Christoph Hellwig wrote:
> On Sun, Apr 21, 2019 at 09:17:16AM +0800, Lu Baolu wrote:
>> +static inline bool platform_has_untrusted_device(void)
>>   {
>> +	bool has_untrusted_device = false;
>>   	struct pci_dev *pdev = NULL;
>>   
>>   	for_each_pci_dev(pdev) {
>>   		if (pdev->untrusted) {
>> +			has_untrusted_device = true;
>>   			break;
>>   		}
>>   	}
>>   
>> +	return has_untrusted_device;
> 
> This shouldn't really be in the intel-iommu driver, should it?
> This probably should be something like pci_has_untrusted_devices
> and be moved to the PCI code.
> 

Fair enough.

Best regards,
Lu Baolu