Hi, I’m not sure about the “pays_base” warning, but your code runs fine in my machine. What happens if you ignore the warning and load the module anyway?
- Sunny On Feb 24, 2014, at 9:04 AM, lx <[email protected]> wrote: > hi all: > the codes is: > ######################################### > #include <linux/module.h> // for printk() > #include <linux/mm.h> // for struct page > #include <asm/page.h> // for struct page > #include <asm/pgtable.h> // for ZERO_PAGE > > static int __init init_hello( void ) > { > int i; > struct page * zero_page; > printk( "\n Kello, the first! \n\n" ); > i = 0x100; > zero_page = ZERO_PAGE(&i); > printk(" the ZERO address is %p", zero_page); > return 0; > } > > static void __exit exit_hello( void ) > { > printk( "\n Goodbye now... \n\n" ); > } > > MODULE_LICENSE("GPL"); > module_init(init_hello); > module_exit(exit_hello); > ######################################### > > I complier it. by: > ######################################### > make -C /lib/modules/`uname -r`/build M=`pwd` > ######################################### > > the results is: > ######################################### > [root@localhost kernel_test]# make -C /lib/modules/`uname -r`/build M=`pwd` > make: Entering directory `/usr/src/kernels/2.6.18-308.el5-x86_64' > CC [M] /opt/lx/kernel/kernel_test/zero.o > Building modules, stage 2. > MODPOST > WARNING: "phys_base" [/opt/lx/kernel/kernel_test/zero.ko] undefined! > LD [M] /opt/lx/kernel/kernel_test/zero.ko > make: Leaving directory `/usr/src/kernels/2.6.18-308.el5-x86_64' > ######################################### > > I try to find the file which defined the "phys_base", for examples; > phys_base > > Defined as a variable in: > arch/sparc/mm/init.c, line 40 > arch/sparc64/kernel/sparc64_ksyms.c, line 110 > arch/sparc64/mm/init.c, line 47 > include/asm-sparc/page.h, line 160 > include/asm-sparc/pgtable.h, line 122 > include/asm-sparc64/pgtable.h, line 227 > > But I can't find the file of init.c in my computer. Please tell me some ways > to solve it, thank you. > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
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