Hi, in kernel 2.6.39, in /include/linux/compiler.h, I found the followed code:
# define __percpu __attribute__((noderef, address_space(3))) #ifdef CONFIG_SPARSE_RCU_POINTER # define __rcu __attribute__((noderef, address_space(4))) #else # define __rcu address_space(num), if num is 0 ,it means kernel space, 1 , user space; 2, io space, so 3 and 4 means what? I found nothing about this by google. Thanks, feng feng...@yeah.net
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