[akpm-mm:mm-nonmm-unstable 11/39] include/linux/mmzone.h:1434: undefined reference to `machine_kexec_prepare'
From: kernel test robot
Date: Thu Jun 23 2022 - 01:47:23 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
head: 4b3b67ef8001c6f44317c6920022ffc6bd4b2b4b
commit: f4da7afe07523ff8930c4466b09a15db18508cd4 [11/39] kexec_file: increase maximum file size to 4G
config: riscv-randconfig-c024-20220622 (https://download.01.org/0day-ci/archive/20220623/202206231338.a6Jz3qZ3-lkp@xxxxxxxxx/config)
compiler: riscv64-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?id=f4da7afe07523ff8930c4466b09a15db18508cd4
git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
git fetch --no-tags akpm-mm mm-nonmm-unstable
git checkout f4da7afe07523ff8930c4466b09a15db18508cd4
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
riscv64-linux-ld: kernel/kexec_core.o: in function `kimage_crash_copy_vmcoreinfo':
kernel/kexec_core.c:502: undefined reference to `machine_kexec_cleanup'
riscv64-linux-ld: kernel/kexec_core.o: in function `kimage_free_pages':
kernel/kexec_core.c:336: undefined reference to `machine_crash_shutdown'
riscv64-linux-ld: kernel/kexec_core.c:337: undefined reference to `machine_kexec'
riscv64-linux-ld: kernel/kexec_core.o: in function `kimage_free':
kernel/kexec_core.c:651: undefined reference to `riscv_crash_save_regs'
riscv64-linux-ld: kernel/kexec_core.o: in function `__nr_to_section':
include/linux/mmzone.h:1403: undefined reference to `machine_shutdown'
riscv64-linux-ld: include/linux/mmzone.h:1403: undefined reference to `machine_kexec'
riscv64-linux-ld: kernel/kexec_file.o: in function `__section_mem_map_addr':
>> include/linux/mmzone.h:1434: undefined reference to `machine_kexec_prepare'
vim +1434 include/linux/mmzone.h
f1eca35a0dc7cb Dan Williams 2019-07-18 1394
29751f6991e845 Andy Whitcroft 2005-06-23 1395 static inline struct mem_section *__nr_to_section(unsigned long nr)
29751f6991e845 Andy Whitcroft 2005-06-23 1396 {
a431dbbc540532 Waiman Long 2022-04-08 1397 unsigned long root = SECTION_NR_TO_ROOT(nr);
a431dbbc540532 Waiman Long 2022-04-08 1398
a431dbbc540532 Waiman Long 2022-04-08 1399 if (unlikely(root >= NR_SECTION_ROOTS))
a431dbbc540532 Waiman Long 2022-04-08 1400 return NULL;
a431dbbc540532 Waiman Long 2022-04-08 1401
83e3c48729d9eb Kirill A. Shutemov 2017-09-29 1402 #ifdef CONFIG_SPARSEMEM_EXTREME
a431dbbc540532 Waiman Long 2022-04-08 @1403 if (!mem_section || !mem_section[root])
83e3c48729d9eb Kirill A. Shutemov 2017-09-29 1404 return NULL;
83e3c48729d9eb Kirill A. Shutemov 2017-09-29 1405 #endif
a431dbbc540532 Waiman Long 2022-04-08 1406 return &mem_section[root][nr & SECTION_ROOT_MASK];
29751f6991e845 Andy Whitcroft 2005-06-23 1407 }
f1eca35a0dc7cb Dan Williams 2019-07-18 1408 extern size_t mem_section_usage_size(void);
29751f6991e845 Andy Whitcroft 2005-06-23 1409
29751f6991e845 Andy Whitcroft 2005-06-23 1410 /*
29751f6991e845 Andy Whitcroft 2005-06-23 1411 * We use the lower bits of the mem_map pointer to store
def9b71ee651a6 Petr Tesarik 2018-01-31 1412 * a little bit of information. The pointer is calculated
def9b71ee651a6 Petr Tesarik 2018-01-31 1413 * as mem_map - section_nr_to_pfn(pnum). The result is
def9b71ee651a6 Petr Tesarik 2018-01-31 1414 * aligned to the minimum alignment of the two values:
def9b71ee651a6 Petr Tesarik 2018-01-31 1415 * 1. All mem_map arrays are page-aligned.
def9b71ee651a6 Petr Tesarik 2018-01-31 1416 * 2. section_nr_to_pfn() always clears PFN_SECTION_SHIFT
def9b71ee651a6 Petr Tesarik 2018-01-31 1417 * lowest bits. PFN_SECTION_SHIFT is arch-specific
def9b71ee651a6 Petr Tesarik 2018-01-31 1418 * (equal SECTION_SIZE_BITS - PAGE_SHIFT), and the
def9b71ee651a6 Petr Tesarik 2018-01-31 1419 * worst combination is powerpc with 256k pages,
def9b71ee651a6 Petr Tesarik 2018-01-31 1420 * which results in PFN_SECTION_SHIFT equal 6.
def9b71ee651a6 Petr Tesarik 2018-01-31 1421 * To sum it up, at least 6 bits are available.
29751f6991e845 Andy Whitcroft 2005-06-23 1422 */
29751f6991e845 Andy Whitcroft 2005-06-23 1423 #define SECTION_MARKED_PRESENT (1UL<<0)
29751f6991e845 Andy Whitcroft 2005-06-23 1424 #define SECTION_HAS_MEM_MAP (1UL<<1)
2d070eab2e8270 Michal Hocko 2017-07-06 1425 #define SECTION_IS_ONLINE (1UL<<2)
326e1b8f83a431 Dan Williams 2019-07-18 1426 #define SECTION_IS_EARLY (1UL<<3)
1f90a3477df3ff Dan Williams 2021-02-25 1427 #define SECTION_TAINT_ZONE_DEVICE (1UL<<4)
1f90a3477df3ff Dan Williams 2021-02-25 1428 #define SECTION_MAP_LAST_BIT (1UL<<5)
29751f6991e845 Andy Whitcroft 2005-06-23 1429 #define SECTION_MAP_MASK (~(SECTION_MAP_LAST_BIT-1))
01c8d337d195ed Naoya Horiguchi 2021-09-02 1430 #define SECTION_NID_SHIFT 6
29751f6991e845 Andy Whitcroft 2005-06-23 1431
29751f6991e845 Andy Whitcroft 2005-06-23 1432 static inline struct page *__section_mem_map_addr(struct mem_section *section)
29751f6991e845 Andy Whitcroft 2005-06-23 1433 {
29751f6991e845 Andy Whitcroft 2005-06-23 @1434 unsigned long map = section->section_mem_map;
29751f6991e845 Andy Whitcroft 2005-06-23 1435 map &= SECTION_MAP_MASK;
29751f6991e845 Andy Whitcroft 2005-06-23 1436 return (struct page *)map;
29751f6991e845 Andy Whitcroft 2005-06-23 1437 }
29751f6991e845 Andy Whitcroft 2005-06-23 1438
:::::: The code at line 1434 was first introduced by commit
:::::: 29751f6991e845f7d002a6ae520bf996b38c8dcd [PATCH] sparsemem hotplug base
:::::: TO: Andy Whitcroft <apw@xxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
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