linux-kernel - Re: [PATCH v2 08/12] iommu: Prepare for separating SVA and IOPF

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Message-ID: <ZNKMz04uhzL9T7ya@ziepe.ca>
Date:   Tue, 8 Aug 2023 15:43:27 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     "Tian, Kevin" <kevin.tian@...el.com>
Cc:     Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Nicolin Chen <nicolinc@...dia.com>,
        "Liu, Yi L" <yi.l.liu@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 08/12] iommu: Prepare for separating SVA and IOPF

On Thu, Aug 03, 2023 at 08:16:47AM +0000, Tian, Kevin wrote:

> Is there plan to introduce further error in the future? otherwise this should
> be void.
> 
> btw the work queue is only for sva. If there is no other caller this can be
> just kept in iommu-sva.c. No need to create a helper.

I think more than just SVA will need a work queue context to process
their faults.

Jason