linux-kernel - Re: [PATCH v7 7/9] iommu/vt-d: Allow qi_submit

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Message-ID: <e1cf94ba-aaf7-448b-a87b-95d8a2442b20@intel.com>
Date: Tue, 26 Dec 2023 12:03:09 +0800
From: Yi Liu <yi.l.liu@...el.com>
To: "Tian, Kevin" <kevin.tian@...el.com>, "joro@...tes.org" <joro@...tes.org>,
	"alex.williamson@...hat.com" <alex.williamson@...hat.com>, "jgg@...dia.com"
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	"baolu.lu@...ux.intel.com" <baolu.lu@...ux.intel.com>
CC: "cohuck@...hat.com" <cohuck@...hat.com>, "eric.auger@...hat.com"
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 Zhenzhong" <zhenzhong.duan@...el.com>, "joao.m.martins@...cle.com"
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	<yan.y.zhao@...el.com>, "j.granados@...sung.com" <j.granados@...sung.com>
Subject: Re: [PATCH v7 7/9] iommu/vt-d: Allow qi_submit_sync() to return the
 QI faults

On 2023/12/22 12:23, Tian, Kevin wrote:
>> From: Liu, Yi L <yi.l.liu@...el.com>
>> Sent: Thursday, December 21, 2023 11:40 PM
>>
>> +	fault &= DMA_FSTS_IQE | DMA_FSTS_ITE | DMA_FSTS_ICE;
>> +	if (fault) {
>> +		if (fsts)
>> +			*fsts |= fault;
> 
> do we expect the fault to be accumulated? otherwise it's clearer to
> just do direct assignment instead of asking for the caller to clear
> the variable before invocation.

not quite get. do you mean the fault should not be cleared in the caller
side?

> the rest looks good:
> 
> Reviewed-by: Kevin Tian <kevin.tian@...el.com>

-- 
Regards,
Yi Liu