arm64/mm: Define dummy pud_user_exec() when using 2-level page-table
With only two levels of page-table, the generic 'pud_*' macros are implemented using dummy operations in pgtable-nopmd.h. Since commit 730a11f9 ("arm64/mm: add pud_user_exec() check in pud_user_accessible_page()"), pud_user_accessible_page() unconditionally calls pud_user_exec(), which is an arm64-specific helper and therefore isn't defined by pgtable-nopmd.h. This results in a build failure for configurations with only two levels of page table: arch/arm64/include/asm/pgtable.h: In function 'pud_user_accessible_page': >> arch/arm64/include/asm/pgtable.h:870:51: error: implicit declaration of function 'pud_user_exec'; did you mean 'pmd_user_exec'? [-Werror=implicit-function-declaration] 870 | return pud_leaf(pud) && (pud_user(pud) || pud_user_exec(pud)); | ^~~~~~~~~~~~~ | pmd_user_exec Fix the problem by defining pud_user_exec() as pud_user() in this case. Link: https://lore.kernel.org/r/202301080515.z6zEksU4-lkp@intel.comReported-by: kernel test robot <lkp@intel.com> Signed-off-by: Will Deacon <will@kernel.org>
Showing
Please register or sign in to comment