Hi Juergen, I love your patch! Yet something to improve: [auto build test ERROR on mmotm/master] [also build test ERROR on v4.16-rc1 next-20180216] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Juergen-Gross/mm-don-t-defer-struct-page-initialization-for-Xen-pv-guests/20180218-233657 base: git://git.cmpxchg.org/linux-mmotm.git master config: x86_64-randconfig-x017-201807 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): mm/page_alloc.c: In function 'update_defer_init': >> mm/page_alloc.c:352:6: error: implicit declaration of function 'xen_pv_domain'; did you mean 'del_dma_domain'? [-Werror=implicit-function-declaration] if (xen_pv_domain()) ^~~~~~~~~~~~~ del_dma_domain cc1: some warnings being treated as errors vim +352 mm/page_alloc.c 339 340 /* 341 * Returns false when the remaining initialisation should be deferred until 342 * later in the boot cycle when it can be parallelised. 343 */ 344 static inline bool update_defer_init(pg_data_t *pgdat, 345 unsigned long pfn, unsigned long zone_end, 346 unsigned long *nr_initialised) 347 { 348 /* Always populate low zones for address-constrained allocations */ 349 if (zone_end < pgdat_end_pfn(pgdat)) 350 return true; 351 /* Xen PV domains need page structures early */ > 352 if (xen_pv_domain()) 353 return true; 354 (*nr_initialised)++; 355 if ((*nr_initialised > pgdat->static_init_pgcnt) && 356 (pfn & (PAGES_PER_SECTION - 1)) == 0) { 357 pgdat->first_deferred_pfn = pfn; 358 return false; 359 } 360 361 return true; 362 } 363 #else 364 static inline void reset_deferred_meminit(pg_data_t *pgdat) 365 { 366 } 367 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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