linux-kernel - Re: [RFC 7/7] iommufd: Skip the CACHE

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Date:   Mon, 25 Sep 2023 10:50:47 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Cindy Lu <lulu@...hat.com>
Cc:     jasowang@...hat.com, mst@...hat.com, yi.l.liu@...el.com,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: Re: [RFC 7/7] iommufd: Skip the CACHE_COHERENCY and iommu group check

On Sun, Sep 24, 2023 at 01:05:40AM +0800, Cindy Lu wrote:
> This is just the work arround for vdpa, I Will
> fix these problems in the next version.
> 
> Skip these 2 checks:
> 1.IOMMU_CAP_CACHE_COHERENCY check
> 2.iommu_group_get check

Uuh, something has gone really, really wrong if you need to skip these
checks in the core iommufd code..

Jason