linux-kernel - Re: [PATCH] mm: remove io-mapping

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Message-Id: <20250726103952.674ee38b16202dff3d54e8aa@linux-foundation.org>
Date: Sat, 26 Jul 2025 10:39:52 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: kernel test robot <lkp@...el.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, llvm@...ts.linux.dev,
 oe-kbuild-all@...ts.linux.dev, Linux Memory Management List
 <linux-mm@...ck.org>, Christoph Hellwig <hch@...radead.org>, David
 Hildenbrand <david@...hat.com>, "Liam R . Howlett"
 <Liam.Howlett@...cle.com>, Vlastimil Babka <vbabka@...e.cz>, Mike Rapoport
 <rppt@...nel.org>, Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko
 <mhocko@...e.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: remove io-mapping

On Sat, 26 Jul 2025 18:15:44 +0800 kernel test robot <lkp@...el.com> wrote:

> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on akpm-mm/mm-everything]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Stoakes/mm-remove-io-mapping/20250724-225556
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/20250724145313.65920-1-lorenzo.stoakes%40oracle.com
> patch subject: [PATCH] mm: remove io-mapping
> config: x86_64-buildonly-randconfig-003-20250725 (https://download.01.org/0day-ci/archive/20250726/202507261811.4FJjX1bu-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250726/202507261811.4FJjX1bu-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202507261811.4FJjX1bu-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> >> drivers/net/ethernet/mellanox/mlx4/main.c:43:10: fatal error: 'linux/io-mapping.h' file not found
>       43 | #include <linux/io-mapping.h>
>          |          ^~~~~~~~~~~~~~~~~~~~

I'm all confused.  include/linux/io-mapping.h is present in every tree
I can find.  This report doesn't identify the HEAD commit which was
used?