linux-kernel - Re: [PATCH v2 05/10] iommu: Remove apply_resv

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Message-ID: <20220209133108.GW4160@nvidia.com>
Date:   Wed, 9 Feb 2022 09:31:08 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>
Cc:     Joerg Roedel <joro@...tes.org>,
        Christoph Hellwig <hch@...radead.org>,
        Ben Skeggs <bskeggs@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Ashok Raj <ashok.raj@...el.com>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Eric Auger <eric.auger@...hat.com>,
        Liu Yi L <yi.l.liu@...el.com>,
        Jacob jun Pan <jacob.jun.pan@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 05/10] iommu: Remove apply_resv_region

On Tue, Feb 08, 2022 at 09:25:54AM +0800, Lu Baolu wrote:
> The apply_resv_region callback in iommu_ops was introduced to reserve an
> IOVA range in the given DMA domain when the IOMMU driver manages the IOVA
> by itself. As all drivers converted to use dma-iommu in the core, there's
> no driver using this anymore. Remove it to avoid dead code.
> 
> Suggested-by: Robin Murphy <robin.murphy@....com>
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> ---
>  include/linux/iommu.h | 4 ----
>  drivers/iommu/iommu.c | 3 ---
>  2 files changed, 7 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason