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Howlett" , Lorenzo Stoakes , David Hildenbrand , Vlastimil Babka , Jann Horn Cc: oe-kbuild-all@lists.linux.dev, Linux Memory Management List , linux-kernel@vger.kernel.org, Ryan Roberts , Anshuman Khandual , Gavin Shan , Zi Yan , Samuel Holland Subject: Re: [PATCH 1/2] mm/debug_vm_pgtable: Use set_pXd() to write page tables Message-ID: <202512120808.akRJJMa7-lkp@intel.com> References: <20251211081117.1126521-2-samuel.holland@sifive.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251211081117.1126521-2-samuel.holland@sifive.com> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 36411100006 X-Stat-Signature: qm5npsf95h7np4nxxbfqjycxe9nbetzc X-Rspam-User: X-HE-Tag: 1765500543-645101 X-HE-Meta: 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 bg7NUIhL qmxrb/a2Vt8DvnVOiggP6EUs6F4k/HabUV9V9cKs4mxqyeh4R2HcW/7p6e9WDpcey92dVJNo7vPFX31titmuUofxHGrP2r1B1vfFkQOGVtyCvZUsPznoPYmIsu+qJn+nW6AeBCiNJgms8rPo2iB+bmg5yqeROZvryNYKyO9TwM+HDWXpOtiy5igyON6Z94Z7orxi5YII4R43If/qYDVex+6UXJ0xmbcex9KqY60hp74k5YA1ghRl+XVpLATmaS3LZIEyD0FuHdkYrdf829dt2b4uY/Y8NFRu1Tu6D+r9RZBa2RaK/q5tkbSIvZBMoMAcm61tmxMCKdvW4NpEQL8UcwH2KtJCvtDVoKWZ3ty6TRnzutyM3MCLMwUsGTDMCwGq7YOANQXXzFCkho8HhTpGk4npJ8oxX4XVxzDLkElGKUzSbNKqCeODqi8zgVg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Samuel, kernel test robot noticed the following build errors: [auto build test ERROR on d358e5254674b70f34c847715ca509e46eb81e6f] url: https://github.com/intel-lab-lkp/linux/commits/Samuel-Holland/mm-debug_vm_pgtable-Use-set_pXd-to-write-page-tables/20251211-161254 base: d358e5254674b70f34c847715ca509e46eb81e6f patch link: https://lore.kernel.org/r/20251211081117.1126521-2-samuel.holland%40sifive.com patch subject: [PATCH 1/2] mm/debug_vm_pgtable: Use set_pXd() to write page tables config: powerpc64-randconfig-r054-20251212 (https://download.01.org/0day-ci/archive/20251212/202512120808.akRJJMa7-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 10.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251212/202512120808.akRJJMa7-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202512120808.akRJJMa7-lkp@intel.com/ All errors (new ones prefixed by >>): mm/debug_vm_pgtable.c: In function 'pmd_huge_tests': >> mm/debug_vm_pgtable.c:448:2: error: implicit declaration of function 'set_pmd'; did you mean 'set_pgd'? [-Werror=implicit-function-declaration] 448 | set_pmd(args->pmdp, __pmd(0)); | ^~~~~~~ | set_pgd mm/debug_vm_pgtable.c: In function 'pud_huge_tests': >> mm/debug_vm_pgtable.c:468:2: error: implicit declaration of function 'set_pud'; did you mean 'set_pgd'? [-Werror=implicit-function-declaration] 468 | set_pud(args->pudp, __pud(0)); | ^~~~~~~ | set_pgd cc1: some warnings being treated as errors Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for CAN_DEV Depends on [n]: NETDEVICES [=n] && CAN [=y] Selected by [y]: - CAN [=y] && NET [=y] vim +448 mm/debug_vm_pgtable.c 433 434 #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP 435 static void __init pmd_huge_tests(struct pgtable_debug_args *args) 436 { 437 pmd_t pmd; 438 439 if (!arch_vmap_pmd_supported(args->page_prot) || 440 args->fixed_alignment < PMD_SIZE) 441 return; 442 443 pr_debug("Validating PMD huge\n"); 444 /* 445 * X86 defined pmd_set_huge() verifies that the given 446 * PMD is not a populated non-leaf entry. 447 */ > 448 set_pmd(args->pmdp, __pmd(0)); 449 WARN_ON(!pmd_set_huge(args->pmdp, __pfn_to_phys(args->fixed_pmd_pfn), args->page_prot)); 450 WARN_ON(!pmd_clear_huge(args->pmdp)); 451 pmd = pmdp_get(args->pmdp); 452 WARN_ON(!pmd_none(pmd)); 453 } 454 455 static void __init pud_huge_tests(struct pgtable_debug_args *args) 456 { 457 pud_t pud; 458 459 if (!arch_vmap_pud_supported(args->page_prot) || 460 args->fixed_alignment < PUD_SIZE) 461 return; 462 463 pr_debug("Validating PUD huge\n"); 464 /* 465 * X86 defined pud_set_huge() verifies that the given 466 * PUD is not a populated non-leaf entry. 467 */ > 468 set_pud(args->pudp, __pud(0)); 469 WARN_ON(!pud_set_huge(args->pudp, __pfn_to_phys(args->fixed_pud_pfn), args->page_prot)); 470 WARN_ON(!pud_clear_huge(args->pudp)); 471 pud = pudp_get(args->pudp); 472 WARN_ON(!pud_none(pud)); 473 } 474 #else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */ 475 static void __init pmd_huge_tests(struct pgtable_debug_args *args) { } 476 static void __init pud_huge_tests(struct pgtable_debug_args *args) { } 477 #endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ 478 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki