If you don't provide the code, nobody can help you!
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[quote:463c4c3453="wdh_414"]我在arm平台下,利用linux操作系统,调试设备驱动。想向地址为0xfffff400的寄存器赋值。我直接用
(*(int *)0xfffff400) = 0x5555;
编译,insmod 都没有问题。可是我执行测试文件的时候
./test.o 出现错误:unable to handle kernel paging request at virtual address fffff400.
谁能帮我解决一下linux设备应该怎样给特殊寄存器赋值啊? [email protected][/quote]