Ira,
On Fri, Nov 06 2020 at 15:29, ira weiny wrote:
Subject prefix wants to 'entry:'. This changes generic code and the x86
part is just required to fix the generic code change.
> Currently struct irqentry_state_t only contains a single bool value
> which makes passing it by value is reasonable. However, future patches
> propose to add information to this struct, for example the PKRS
> register/thread state.
>
> Adding information to irqentry_state_t makes passing by value less
> efficient. Therefore, change the entry/exit calls to pass irq_state by
> reference.
The PKRS muck needs to add an u32 to that struct. So how is that a
problem?
The resulting struct still fits into 64bit which is by far more
efficiently passed by value than by reference. So which problem are you
solving here?
Thanks
tglx
