linux-kernel - Re: [PATCH] docs/x86: Update AMD IOMMU specification locationi

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Message-ID: <20260105151959.GAaVvWnyEonFSjilB_@fat_crate.local>
Date: Mon, 5 Jan 2026 16:19:59 +0100
From: Borislav Petkov <bp@...en8.de>
To: Richard Lyu <richard.lyu@...e.com>
Cc: Jonathan Corbet <corbet@....net>, x86@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H . Peter Anvin" <hpa@...or.com>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] docs/x86: Update AMD IOMMU specification locationi

On Mon, Jan 05, 2026 at 11:05:54PM +0800, Richard Lyu wrote:
> The current link to the AMD I/O Virtualization Technology IOMMU
> specification (document 48882) in Documentation/arch/x86/iommu.rst
> is outdated and points to a defunct URL on the AMD website.
> 
> Update the link in Documentation/arch/x86/iommu.rst to the current stable
> location for the specification. This ensures users can easily access the
> required architectural details.
> 
> Signed-off-by: Richard Lyu <richard.lyu@...e.com>
> ---
>  Documentation/arch/x86/iommu.rst | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/arch/x86/iommu.rst b/Documentation/arch/x86/iommu.rst
> index 41fbadfe2221..cd1843812b4b 100644
> --- a/Documentation/arch/x86/iommu.rst
> +++ b/Documentation/arch/x86/iommu.rst
> @@ -5,7 +5,7 @@ x86 IOMMU Support
>  The architecture specs can be obtained from the below locations.
>  
>  - Intel: http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/vt-directed-io-spec.pdf
> -- AMD: https://www.amd.com/content/dam/amd/en/documents/processor-tech-docs/specifications/48882_3_07_PUB.pdf
> +- AMD: https://docs.amd.com/v/u/en-US/48882_IOMMU
>  
>  This guide gives a quick cheat sheet for some basic understanding.

What I'd do instead is leave enough breadcrumbs here in the text - doc ID, doc
title etc, so that people can actually find the document by using a search
engine which has managed to index it.

Instead of updating links mindlessly because those do change constantly. No
matter the vendor - as long as it is a corporate website, links get changed on
a regular basis.

I'd say.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette