On 2020-12-03 11:25, Rongwei Wang wrote:
2020年12月3日 下午4:35，Marc Zyngier <m...@kernel.org> 写道：
[...]
But what does it mean to change random system registers while the
kernel
itself is using them in parallel? All you are introducing is a bunch
of
uncontrolled, unexpected, and possibly fatal side effects.
This problem exists when writing to a register, but it does not exist
when reading a register.
If you're not aware that the ARM architecture does have system registers
with read side-effects, you really shouldn't be writing this code.
M.
--
Jazz is not dead. It just smells funny...
