Hi Dan, [auto build test WARNING on v4.5-rc6] [also build test WARNING on next-20160229] [cannot apply to linux-nvdimm/libnvdimm-for-next] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/Dan-Williams/devm_memremap_pages-vs-section-misaligned-pmem/20160301-105936 config: i386-randconfig-x007-201609 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers/nvdimm/pmem.c: In function 'init_altmap_reserve': >> drivers/nvdimm/pmem.c:375:16: warning: unused variable 'base_pfn' >> [-Wunused-variable] unsigned long base_pfn = __phys_to_pfn(base); ^ vim +/base_pfn +375 drivers/nvdimm/pmem.c 359 /* 360 * We hotplug memory at section granularity, pad the reserved area from 361 * the previous section base to the namespace base address. 362 */ 363 static unsigned long init_altmap_base(resource_size_t base) 364 { 365 unsigned long base_pfn = __phys_to_pfn(base); 366 367 #ifdef CONFIG_SPARSEMEM 368 base_pfn = SECTION_ALIGN_DOWN(base_pfn); 369 #endif 370 return base_pfn; 371 } 372 373 static unsigned long init_altmap_reserve(resource_size_t base) 374 { > 375 unsigned long base_pfn = __phys_to_pfn(base); 376 unsigned long reserve = __phys_to_pfn(SZ_8K); 377 378 #ifdef CONFIG_SPARSEMEM 379 reserve += base_pfn - SECTION_ALIGN_DOWN(base_pfn); 380 #endif 381 return reserve; 382 } 383 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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