* switch mmu context when jump into kernel
@ 1999-12-11 1:02 Wang Yong
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From: Wang Yong @ 1999-12-11 1:02 UTC (permalink / raw)
To: linuxppc-embedded
powerpc 4xx use mmu context(called TID(0~255)) when translate virtual
addr to physical addr. a SPR named PID hold this context, so i think
once i enable the addr translate, i have to set PID to
current->mm->context
to make translating work correctly. and it should be set to 0 when
interrupt or system call arise.
but after studying the kernel source i downloaded from tivo for a long
time, i don't find any code to do that job. i think it mostly should be
in these place: transfer_to_handler and int_return but it not. is the
kernel missing something?
i am sorry if i post this message twice, my netscape got some problem.
Wang
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