Re: [PATCH] mm: Remove pud_user() from asm-generic/pgtable-nopmd.h

From: kernel test robot <lkp@intel.com>
To: Christophe Leroy <christophe.leroy@csgroup.eu>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>, Arnd Bergmann <arnd@arndb.de>
Cc: oe-kbuild-all@lists.linux.dev,
	Christophe Leroy <christophe.leroy@csgroup.eu>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-arch@vger.kernel.org, Peter Xu <peterx@redhat.com>,
	Oscar Salvador <osalvador@suse.de>
Subject: Re: [PATCH] mm: Remove pud_user() from asm-generic/pgtable-nopmd.h
Date: Wed, 13 Aug 2025 14:56:13 +0800	[thread overview]
Message-ID: <202508131402.ZaPLdNsY-lkp@intel.com> (raw)
In-Reply-To: <c7f99612ecfa04054b37518df661d04f88f7c9af.1754997083.git.christophe.leroy@csgroup.eu>

Hi Christophe,

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/Christophe-Leroy/mm-Remove-pud_user-from-asm-generic-pgtable-nopmd-h/20250812-195212
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/c7f99612ecfa04054b37518df661d04f88f7c9af.1754997083.git.christophe.leroy%40csgroup.eu
patch subject: [PATCH] mm: Remove pud_user() from asm-generic/pgtable-nopmd.h
config: arm64-randconfig-002-20250813 (https://download.01.org/0day-ci/archive/20250813/202508131402.ZaPLdNsY-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250813/202508131402.ZaPLdNsY-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508131402.ZaPLdNsY-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/pgtable.h:6,
                    from arch/arm64/include/asm/io.h:12,
                    from include/linux/io.h:12,
                    from include/linux/irq.h:20,
                    from include/asm-generic/hardirq.h:17,
                    from arch/arm64/include/asm/hardirq.h:17,
                    from include/linux/hardirq.h:11,
                    from include/linux/interrupt.h:11,
                    from include/linux/trace_recursion.h:5,
                    from include/linux/ftrace.h:10,
                    from arch/arm64/kernel/asm-offsets.c:12:
   arch/arm64/include/asm/pgtable.h: In function 'pud_user_accessible_page':
>> arch/arm64/include/asm/pgtable.h:958:33: error: called object is not a function or function pointer
     958 | #define pud_user                false /* Always 0 with folding */
         |                                 ^~~~~
   arch/arm64/include/asm/pgtable.h:1307:54: note: in expansion of macro 'pud_user'
    1307 |         return pud_valid(pud) && !pud_table(pud) && (pud_user(pud) || pud_user_exec(pud));
         |                                                      ^~~~~~~~
>> arch/arm64/include/asm/pgtable.h:958:33: error: called object is not a function or function pointer
     958 | #define pud_user                false /* Always 0 with folding */
         |                                 ^~~~~
   arch/arm64/include/asm/pgtable.h:959:33: note: in expansion of macro 'pud_user'
     959 | #define pud_user_exec(pud)      pud_user(pud) /* Always 0 with folding */
         |                                 ^~~~~~~~
   arch/arm64/include/asm/pgtable.h:1307:71: note: in expansion of macro 'pud_user_exec'
    1307 |         return pud_valid(pud) && !pud_table(pud) && (pud_user(pud) || pud_user_exec(pud));
         |                                                                       ^~~~~~~~~~~~~
   make[3]: *** [scripts/Makefile.build:182: arch/arm64/kernel/asm-offsets.s] Error 1 shuffle=3093671401
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1281: prepare0] Error 2 shuffle=3093671401
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:248: __sub-make] Error 2 shuffle=3093671401
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2 shuffle=3093671401
   make: Target 'prepare' not remade because of errors.

vim +958 arch/arm64/include/asm/pgtable.h

   955	
   956	#define pud_valid(pud)		false
   957	#define pud_page_paddr(pud)	({ BUILD_BUG(); 0; })
 > 958	#define pud_user		false /* Always 0 with folding */
   959	#define pud_user_exec(pud)	pud_user(pud) /* Always 0 with folding */
   960	

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