From: kernel test robot <lkp@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: oe-kbuild-all@lists.linux.dev,
Linux Memory Management List <linux-mm@kvack.org>
Subject: [linux-next:master 3681/3829] arch/sparc/mm/init_64.c:2220:23: warning: variable 'pagecv_flag' set but not used
Date: Wed, 29 Nov 2023 21:20:37 +0800 [thread overview]
Message-ID: <202311292022.U9pg0esq-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 1f5c003694fab4b1ba6cbdcc417488b975c088d0
commit: 520f30b8bba1b0f078a382bd3859f176a2126a03 [3681/3829] Merge branch 'mm-everything' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
config: sparc-randconfig-002-20231129 (https://download.01.org/0day-ci/archive/20231129/202311292022.U9pg0esq-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231129/202311292022.U9pg0esq-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311292022.U9pg0esq-lkp@intel.com/
All warnings (new ones prefixed by >>):
arch/sparc/mm/init_64.c: In function 'arch_hugetlb_valid_size':
arch/sparc/mm/init_64.c:361:24: warning: variable 'hv_pgsz_idx' set but not used [-Wunused-but-set-variable]
361 | unsigned short hv_pgsz_idx;
| ^~~~~~~~~~~
arch/sparc/mm/init_64.c: In function 'sun4v_linear_pte_xor_finalize':
>> arch/sparc/mm/init_64.c:2220:23: warning: variable 'pagecv_flag' set but not used [-Wunused-but-set-variable]
2220 | unsigned long pagecv_flag;
| ^~~~~~~~~~~
vim +/pagecv_flag +2220 arch/sparc/mm/init_64.c
c69ad0a3f7d871 David S. Miller 2012-09-06 2217
c69ad0a3f7d871 David S. Miller 2012-09-06 2218 static void __init sun4v_linear_pte_xor_finalize(void)
c69ad0a3f7d871 David S. Miller 2012-09-06 2219 {
494e5b6faeda1d Khalid Aziz 2015-05-27 @2220 unsigned long pagecv_flag;
494e5b6faeda1d Khalid Aziz 2015-05-27 2221
494e5b6faeda1d Khalid Aziz 2015-05-27 2222 /* Bit 9 of TTE is no longer CV bit on M7 processor and it instead
494e5b6faeda1d Khalid Aziz 2015-05-27 2223 * enables MCD error. Do not set bit 9 on M7 processor.
494e5b6faeda1d Khalid Aziz 2015-05-27 2224 */
494e5b6faeda1d Khalid Aziz 2015-05-27 2225 switch (sun4v_chip_type) {
494e5b6faeda1d Khalid Aziz 2015-05-27 2226 case SUN4V_CHIP_SPARC_M7:
7d484acb2f9064 Allen Pais 2017-07-24 2227 case SUN4V_CHIP_SPARC_M8:
c5b8b5beee1e2a Khalid Aziz 2016-04-19 2228 case SUN4V_CHIP_SPARC_SN:
494e5b6faeda1d Khalid Aziz 2015-05-27 2229 pagecv_flag = 0x00;
494e5b6faeda1d Khalid Aziz 2015-05-27 2230 break;
494e5b6faeda1d Khalid Aziz 2015-05-27 2231 default:
494e5b6faeda1d Khalid Aziz 2015-05-27 2232 pagecv_flag = _PAGE_CV_4V;
494e5b6faeda1d Khalid Aziz 2015-05-27 2233 break;
494e5b6faeda1d Khalid Aziz 2015-05-27 2234 }
c69ad0a3f7d871 David S. Miller 2012-09-06 2235 #ifndef CONFIG_DEBUG_PAGEALLOC
c69ad0a3f7d871 David S. Miller 2012-09-06 2236 if (cpu_pgsz_mask & HV_PGSZ_MASK_256MB) {
c69ad0a3f7d871 David S. Miller 2012-09-06 2237 kern_linear_pte_xor[1] = (_PAGE_VALID | _PAGE_SZ256MB_4V) ^
922631b988d8cb David S. Miller 2013-09-18 2238 PAGE_OFFSET;
494e5b6faeda1d Khalid Aziz 2015-05-27 2239 kern_linear_pte_xor[1] |= (_PAGE_CP_4V | pagecv_flag |
c69ad0a3f7d871 David S. Miller 2012-09-06 2240 _PAGE_P_4V | _PAGE_W_4V);
c69ad0a3f7d871 David S. Miller 2012-09-06 2241 } else {
c69ad0a3f7d871 David S. Miller 2012-09-06 2242 kern_linear_pte_xor[1] = kern_linear_pte_xor[0];
c69ad0a3f7d871 David S. Miller 2012-09-06 2243 }
c69ad0a3f7d871 David S. Miller 2012-09-06 2244
c69ad0a3f7d871 David S. Miller 2012-09-06 2245 if (cpu_pgsz_mask & HV_PGSZ_MASK_2GB) {
c69ad0a3f7d871 David S. Miller 2012-09-06 2246 kern_linear_pte_xor[2] = (_PAGE_VALID | _PAGE_SZ2GB_4V) ^
922631b988d8cb David S. Miller 2013-09-18 2247 PAGE_OFFSET;
494e5b6faeda1d Khalid Aziz 2015-05-27 2248 kern_linear_pte_xor[2] |= (_PAGE_CP_4V | pagecv_flag |
c69ad0a3f7d871 David S. Miller 2012-09-06 2249 _PAGE_P_4V | _PAGE_W_4V);
c69ad0a3f7d871 David S. Miller 2012-09-06 2250 } else {
c69ad0a3f7d871 David S. Miller 2012-09-06 2251 kern_linear_pte_xor[2] = kern_linear_pte_xor[1];
c69ad0a3f7d871 David S. Miller 2012-09-06 2252 }
c69ad0a3f7d871 David S. Miller 2012-09-06 2253
c69ad0a3f7d871 David S. Miller 2012-09-06 2254 if (cpu_pgsz_mask & HV_PGSZ_MASK_16GB) {
c69ad0a3f7d871 David S. Miller 2012-09-06 2255 kern_linear_pte_xor[3] = (_PAGE_VALID | _PAGE_SZ16GB_4V) ^
922631b988d8cb David S. Miller 2013-09-18 2256 PAGE_OFFSET;
494e5b6faeda1d Khalid Aziz 2015-05-27 2257 kern_linear_pte_xor[3] |= (_PAGE_CP_4V | pagecv_flag |
c69ad0a3f7d871 David S. Miller 2012-09-06 2258 _PAGE_P_4V | _PAGE_W_4V);
c69ad0a3f7d871 David S. Miller 2012-09-06 2259 } else {
c69ad0a3f7d871 David S. Miller 2012-09-06 2260 kern_linear_pte_xor[3] = kern_linear_pte_xor[2];
c69ad0a3f7d871 David S. Miller 2012-09-06 2261 }
c69ad0a3f7d871 David S. Miller 2012-09-06 2262 #endif
c69ad0a3f7d871 David S. Miller 2012-09-06 2263 }
c69ad0a3f7d871 David S. Miller 2012-09-06 2264
:::::: The code at line 2220 was first introduced by commit
:::::: 494e5b6faeda1d1e830a13e10b3c7bc323f35d97 sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE
:::::: TO: Khalid Aziz <khalid.aziz@oracle.com>
:::::: CC: David S. Miller <davem@davemloft.net>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2023-11-29 13:21 UTC|newest]
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