schedule( ) always runs in kernel space, therefore the address of all
elements used by schedule() is not virtual address but physical
address.?
analogous question also appears in system call , when I define myself
syscall , for example:
asmlinkage long sys_check(a,b ,c){
unsigned long buf;
...........
}
then , the buf is stored in kernel space , that is , physical address .
right or wrong
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