linux-kernel - Re: [PATCH 4/7] x86: remove a stray reference to pci-nommu.c

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Message-ID: <alpine.DEB.2.21.1805262120210.1585@nanos.tec.linutronix.de>
Date:   Sat, 26 May 2018 21:23:08 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Christoph Hellwig <hch@....de>
cc:     Ingo Molnar <mingo@...hat.com>, Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        x86@...nel.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, linux-ia64@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH 4/7] x86: remove a stray reference to pci-nommu.c

On Fri, 25 May 2018, Christoph Hellwig wrote:

Subject should be: Documentation/x86: Remove .....

please

> This is just the minimal workaround.  The file file is mostly either stale

file file?

> and/or duplicative of Documentation/admin-guide/kernel-parameters.txt,
> but that is much more work than I'm willing to do right now.

Yeah, this thing is on the todo list ...

> Signed-off-by: Christoph Hellwig <hch@....de>

Other than the above nits:

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>

> ---
>  Documentation/x86/x86_64/boot-options.txt | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
> index b297c48389b9..153b3a57fba2 100644
> --- a/Documentation/x86/x86_64/boot-options.txt
> +++ b/Documentation/x86/x86_64/boot-options.txt
> @@ -187,9 +187,9 @@ PCI
>  
>  IOMMU (input/output memory management unit)
>  
> - Currently four x86-64 PCI-DMA mapping implementations exist:
> + Multiple x86-64 PCI-DMA mapping implementations exist, for example:
>  
> -   1. <arch/x86_64/kernel/pci-nommu.c>: use no hardware/software IOMMU at all
> +   1. <lib/dma-direct.c>: use no hardware/software IOMMU at all
>        (e.g. because you have < 3 GB memory).
>        Kernel boot message: "PCI-DMA: Disabling IOMMU"
>  
> -- 
> 2.17.0
> 
>