linux-kernel - RE: [PATCH v2 1/2] iommu/amd: Enable swiotlb in all cases

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Message-ID: <BL1PR12MB5157E55F2F469E66B46157CDE2E79@BL1PR12MB5157.namprd12.prod.outlook.com>
Date:   Wed, 6 Apr 2022 17:04:52 +0000
From:   "Limonciello, Mario" <Mario.Limonciello@....com>
To:     Christoph Hellwig <hch@...radead.org>
CC:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        "open list:IOMMU DRIVERS" <iommu@...ts.linux-foundation.org>,
        "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@....com>,
        "Hegde, Vasant" <Vasant.Hegde@....com>,
        open list <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 1/2] iommu/amd: Enable swiotlb in all cases

[Public]



> -----Original Message-----
> From: Christoph Hellwig <hch@...radead.org>
> Sent: Monday, April 4, 2022 23:34
> To: Limonciello, Mario <Mario.Limonciello@....com>
> Cc: Joerg Roedel <joro@...tes.org>; Will Deacon <will@...nel.org>;
> Christoph Hellwig <hch@...radead.org>; Marek Szyprowski
> <m.szyprowski@...sung.com>; Robin Murphy <robin.murphy@....com>;
> open list:IOMMU DRIVERS <iommu@...ts.linux-foundation.org>;
> Suthikulpanit, Suravee <Suravee.Suthikulpanit@....com>; Hegde, Vasant
> <Vasant.Hegde@....com>; open list <linux-kernel@...r.kernel.org>
> Subject: Re: [PATCH v2 1/2] iommu/amd: Enable swiotlb in all cases
> 
> Looks good:
> 
> Reviewed-by: Christoph Hellwig <hch@....de>

Thanks!

Considering before this fix effectively swiotlb was turned off on most AMD
systems, when this is picked up I think y'all should consider to add a:

Cc: stable@...r.kernel.org # 5.11+

As well.