linux-kernel - Re: [PATCH] RDMA/usnic: Stop using iommu

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Message-ID: <20220408172216.GB3637956@nvidia.com>
Date:   Fri, 8 Apr 2022 14:22:16 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Robin Murphy <robin.murphy@....com>
Cc:     benve@...co.com, neescoba@...co.com, linux-rdma@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RDMA/usnic: Stop using iommu_present()

On Tue, Apr 05, 2022 at 01:19:59PM +0100, Robin Murphy wrote:
> Even if an IOMMU might be present for some PCI segment in the system,
> that doesn't necessarily mean it provides translation for the device(s)
> we care about. Replace iommu_present() with a more appropriate check at
> probe time, and garbage-collect the resulting empty init function.
> 
> Signed-off-by: Robin Murphy <robin.murphy@....com>
> ---
>  drivers/infiniband/hw/usnic/usnic_ib_main.c | 11 +++++------
>  drivers/infiniband/hw/usnic/usnic_uiom.c    | 10 ----------
>  drivers/infiniband/hw/usnic/usnic_uiom.h    |  1 -
>  3 files changed, 5 insertions(+), 17 deletions(-)

Applied to for-next, thanks

Jason