On Wed, Apr 08, 2020 at 10:21:29PM +1000, Michael Ellerman wrote: > > We should be able to just allocate the rtas_args on the stack, it's only > ~80 odd bytes. And then we can use rtas_call_unlocked() which doesn't > take the global lock.
Do we instantiate a 64-bit RTAS these days, or is it still 32-bit? In the old days we had to make sure the RTAS argument buffer was below the 4GB point. If that's still necessary then perhaps putting rtas_args inside the PACA would be the way to go. Paul.
