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Message-ID: <202409021810.ATs0en56-lkp@intel.com>
Date: Mon, 2 Sep 2024 18:14:46 +0800
From: kernel test robot <lkp@...el.com>
To: Arnd Bergmann <arnd@...db.de>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Masahiro Yamada <masahiroy@...nel.org>, Alex Shi <alexs@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Miguel Ojeda <ojeda@...nel.org>,
Nathan Chancellor <nathan@...nel.org>
Subject: arch/sh/mm/cache-sh4.c:224:13: error: assignment to 'pmd_t *' from
'int' makes pointer from integer without a cast
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 67784a74e258a467225f0e68335df77acd67b7ab
commit: e8c07082a810fbb9db303a2b66b66b8d7e588b53 Kbuild: move to -std=gnu11
date: 2 years, 6 months ago
config: sh-randconfig-r062-20240902 (https://download.01.org/0day-ci/archive/20240902/202409021810.ATs0en56-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240902/202409021810.ATs0en56-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409021810.ATs0en56-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/gfp.h:6,
from include/linux/mm.h:10,
from arch/sh/mm/cache-sh4.c:14:
include/linux/mmzone.h: In function '__nr_to_section':
include/linux/mmzone.h:1396:13: warning: the comparison will always evaluate as 'true' for the address of 'mem_section' will never be NULL [-Waddress]
1396 | if (!mem_section[SECTION_NR_TO_ROOT(nr)])
| ^
include/linux/mmzone.h:1382:27: note: 'mem_section' declared here
1382 | extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT];
| ^~~~~~~~~~~
arch/sh/mm/cache-sh4.c: In function 'flush_cache_one':
arch/sh/mm/cache-sh4.c:99:31: error: 'cached_to_uncached' undeclared (first use in this function); did you mean 'jump_to_uncached'?
99 | exec_offset = cached_to_uncached;
| ^~~~~~~~~~~~~~~~~~
| jump_to_uncached
arch/sh/mm/cache-sh4.c:99:31: note: each undeclared identifier is reported only once for each function it appears in
arch/sh/mm/cache-sh4.c: In function 'sh4_flush_cache_mm':
arch/sh/mm/cache-sh4.c:192:13: error: implicit declaration of function 'cpu_context'; did you mean 'put_io_context'? [-Wimplicit-function-declaration]
192 | if (cpu_context(smp_processor_id(), mm) == NO_CONTEXT)
| ^~~~~~~~~~~
| put_io_context
arch/sh/mm/cache-sh4.c: In function 'sh4_flush_cache_page':
arch/sh/mm/cache-sh4.c:224:15: error: implicit declaration of function 'pmd_off' [-Wimplicit-function-declaration]
224 | pmd = pmd_off(vma->vm_mm, address);
| ^~~~~~~
>> arch/sh/mm/cache-sh4.c:224:13: error: assignment to 'pmd_t *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
224 | pmd = pmd_off(vma->vm_mm, address);
| ^
arch/sh/mm/cache-sh4.c:225:15: error: implicit declaration of function 'pte_offset_kernel' [-Wimplicit-function-declaration]
225 | pte = pte_offset_kernel(pmd, address);
| ^~~~~~~~~~~~~~~~~
>> arch/sh/mm/cache-sh4.c:225:13: error: assignment to 'pte_t *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
225 | pte = pte_offset_kernel(pmd, address);
| ^
arch/sh/mm/cache-sh4.c: In function 'sh4_flush_cache_range':
arch/sh/mm/cache-sh4.c:276:30: warning: variable 'end' set but not used [-Wunused-but-set-variable]
276 | unsigned long start, end;
| ^~~
arch/sh/mm/cache-sh4.c:276:23: warning: variable 'start' set but not used [-Wunused-but-set-variable]
276 | unsigned long start, end;
| ^~~~~
arch/sh/mm/cache-sh4.c: At top level:
arch/sh/mm/cache-sh4.c:374:13: warning: no previous prototype for 'sh4_cache_init' [-Wmissing-prototypes]
374 | void __init sh4_cache_init(void)
| ^~~~~~~~~~~~~~
vim +224 arch/sh/mm/cache-sh4.c
^1da177e4c3f41 Linus Torvalds 2005-04-16 197
^1da177e4c3f41 Linus Torvalds 2005-04-16 198 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 199 * Write back and invalidate I/D-caches for the page.
^1da177e4c3f41 Linus Torvalds 2005-04-16 200 *
^1da177e4c3f41 Linus Torvalds 2005-04-16 201 * ADDR: Virtual Address (U0 address)
^1da177e4c3f41 Linus Torvalds 2005-04-16 202 * PFN: Physical page number
^1da177e4c3f41 Linus Torvalds 2005-04-16 203 */
f26b2a562b46ab Paul Mundt 2009-08-21 204 static void sh4_flush_cache_page(void *args)
^1da177e4c3f41 Linus Torvalds 2005-04-16 205 {
f26b2a562b46ab Paul Mundt 2009-08-21 206 struct flusher_data *data = args;
f26b2a562b46ab Paul Mundt 2009-08-21 207 struct vm_area_struct *vma;
deaef20e9789d9 Paul Mundt 2009-09-09 208 struct page *page;
f26b2a562b46ab Paul Mundt 2009-08-21 209 unsigned long address, pfn, phys;
deaef20e9789d9 Paul Mundt 2009-09-09 210 int map_coherent = 0;
deaef20e9789d9 Paul Mundt 2009-09-09 211 pmd_t *pmd;
deaef20e9789d9 Paul Mundt 2009-09-09 212 pte_t *pte;
deaef20e9789d9 Paul Mundt 2009-09-09 213 void *vaddr;
b638d0b921dc95 Richard Curnow 2006-09-27 214
f26b2a562b46ab Paul Mundt 2009-08-21 215 vma = data->vma;
abeaf33a410176 Paul Mundt 2009-10-16 216 address = data->addr1 & PAGE_MASK;
f26b2a562b46ab Paul Mundt 2009-08-21 217 pfn = data->addr2;
f26b2a562b46ab Paul Mundt 2009-08-21 218 phys = pfn << PAGE_SHIFT;
deaef20e9789d9 Paul Mundt 2009-09-09 219 page = pfn_to_page(pfn);
f26b2a562b46ab Paul Mundt 2009-08-21 220
e7b8b7f16edc9b Paul Mundt 2009-08-15 221 if (cpu_context(smp_processor_id(), vma->vm_mm) == NO_CONTEXT)
e7b8b7f16edc9b Paul Mundt 2009-08-15 222 return;
e7b8b7f16edc9b Paul Mundt 2009-08-15 223
e05c7b1f2bc4b7 Mike Rapoport 2020-06-08 @224 pmd = pmd_off(vma->vm_mm, address);
deaef20e9789d9 Paul Mundt 2009-09-09 @225 pte = pte_offset_kernel(pmd, address);
deaef20e9789d9 Paul Mundt 2009-09-09 226
deaef20e9789d9 Paul Mundt 2009-09-09 227 /* If the page isn't present, there is nothing to do here. */
deaef20e9789d9 Paul Mundt 2009-09-09 228 if (!(pte_val(*pte) & _PAGE_PRESENT))
deaef20e9789d9 Paul Mundt 2009-09-09 229 return;
^1da177e4c3f41 Linus Torvalds 2005-04-16 230
deaef20e9789d9 Paul Mundt 2009-09-09 231 if ((vma->vm_mm == current->active_mm))
deaef20e9789d9 Paul Mundt 2009-09-09 232 vaddr = NULL;
deaef20e9789d9 Paul Mundt 2009-09-09 233 else {
b638d0b921dc95 Richard Curnow 2006-09-27 234 /*
deaef20e9789d9 Paul Mundt 2009-09-09 235 * Use kmap_coherent or kmap_atomic to do flushes for
deaef20e9789d9 Paul Mundt 2009-09-09 236 * another ASID than the current one.
b638d0b921dc95 Richard Curnow 2006-09-27 237 */
deaef20e9789d9 Paul Mundt 2009-09-09 238 map_coherent = (current_cpu_data.dcache.n_aliases &&
55661fc1f105ed Paul Mundt 2010-12-01 239 test_bit(PG_dcache_clean, &page->flags) &&
e1534ae95004d6 Kirill A. Shutemov 2016-01-15 240 page_mapcount(page));
deaef20e9789d9 Paul Mundt 2009-09-09 241 if (map_coherent)
deaef20e9789d9 Paul Mundt 2009-09-09 242 vaddr = kmap_coherent(page, address);
deaef20e9789d9 Paul Mundt 2009-09-09 243 else
bc3e11be88010e Cong Wang 2011-11-25 244 vaddr = kmap_atomic(page);
deaef20e9789d9 Paul Mundt 2009-09-09 245
deaef20e9789d9 Paul Mundt 2009-09-09 246 address = (unsigned long)vaddr;
deaef20e9789d9 Paul Mundt 2009-09-09 247 }
deaef20e9789d9 Paul Mundt 2009-09-09 248
abeaf33a410176 Paul Mundt 2009-10-16 249 flush_cache_one(CACHE_OC_ADDRESS_ARRAY |
deaef20e9789d9 Paul Mundt 2009-09-09 250 (address & shm_align_mask), phys);
deaef20e9789d9 Paul Mundt 2009-09-09 251
deaef20e9789d9 Paul Mundt 2009-09-09 252 if (vma->vm_flags & VM_EXEC)
deaef20e9789d9 Paul Mundt 2009-09-09 253 flush_icache_all();
deaef20e9789d9 Paul Mundt 2009-09-09 254
deaef20e9789d9 Paul Mundt 2009-09-09 255 if (vaddr) {
deaef20e9789d9 Paul Mundt 2009-09-09 256 if (map_coherent)
deaef20e9789d9 Paul Mundt 2009-09-09 257 kunmap_coherent(vaddr);
deaef20e9789d9 Paul Mundt 2009-09-09 258 else
bc3e11be88010e Cong Wang 2011-11-25 259 kunmap_atomic(vaddr);
^1da177e4c3f41 Linus Torvalds 2005-04-16 260 }
b638d0b921dc95 Richard Curnow 2006-09-27 261 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 262
:::::: The code at line 224 was first introduced by commit
:::::: e05c7b1f2bc4b7b28199b9a7572f73436d97317e mm: pgtable: add shortcuts for accessing kernel PMD and PTE
:::::: TO: Mike Rapoport <rppt@...ux.ibm.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
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https://github.com/intel/lkp-tests/wiki
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