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

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Message-ID: <BN9PR11MB5276468811C5113427D4CA6F8C94A@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Fri, 22 Dec 2023 04:23:23 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: "Liu, Yi L" <yi.l.liu@...el.com>, "joro@...tes.org" <joro@...tes.org>,
	"alex.williamson@...hat.com" <alex.williamson@...hat.com>, "jgg@...dia.com"
	<jgg@...dia.com>, "robin.murphy@....com" <robin.murphy@....com>,
	"baolu.lu@...ux.intel.com" <baolu.lu@...ux.intel.com>
CC: "cohuck@...hat.com" <cohuck@...hat.com>, "eric.auger@...hat.com"
	<eric.auger@...hat.com>, "nicolinc@...dia.com" <nicolinc@...dia.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>, "mjrosato@...ux.ibm.com"
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 Zhenzhong" <zhenzhong.duan@...el.com>, "joao.m.martins@...cle.com"
	<joao.m.martins@...cle.com>, "Zeng, Xin" <xin.zeng@...el.com>, "Zhao, Yan Y"
	<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

> 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.

the rest looks good:

Reviewed-by: Kevin Tian <kevin.tian@...el.com>