On Sat, Sep 19, 2009 at 2:47 PM, Chetan Nanda <chetannanda@xxxxxxxxx> wrote:
Hi,
I have small doubt regarding copy_to_user/copy_from_user macros:
-Can these macros be used in interrupt context.. what if page belong to user address is not in memory (not loaded/swapped out)?
-If we use copy_to_user in interrupt context, then how can this be assure that data is copied into correct process buffer?
As at a time of interrupt it can't be guaranteed that intended user process is the current process running.
These may be silly question but create some confusion for me....
Thanks,
Chetan Nanda
