linux-kernel - Re: [PATCH] vfio: mlx5, pds: add IOMMU

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Message-ID: <20231023131229.GR3952@nvidia.com>
Date:   Mon, 23 Oct 2023 10:12:29 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Joao Martins <joao.m.martins@...cle.com>
Cc:     Arnd Bergmann <arnd@...nel.org>, Kevin Tian <kevin.tian@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        Yishai Hadas <yishaih@...dia.com>,
        Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Brett Creeley <brett.creeley@....com>,
        Shixiong Ou <oushixiong@...inos.cn>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] vfio: mlx5, pds: add IOMMU_SUPPORT dependency

On Mon, Oct 23, 2023 at 01:37:28PM +0100, Joao Martins wrote:

> iommufd Kconfig is only included in the IOMMU_SUPPORT kconfig if clause; so
> moving it out from the iommufd kconfig out into iommu kconfig should fix it.
> Didn't realize that one can select IOMMU_API yet have IOMMU_SUPPORT unset/unmet.
> I'll make the move in v6

I think this is some cruft that accumulated over the years, it doesn't
make alot of sense that there are two kconfigs now..

Jason