On Fri, 14 May 2021 14:40:08 +1000, Nicholas Piggin wrote:
> Some interrupt handlers have an "extra" that saves 1 or 2 registers
> (r14, r15) in the paca save area and makes them available to use by the
> handler.
>
> The change to always save nvgprs in exception handlers lead to some
> interrupt handlers saving those scratch r14 / r15 registers into the
> interrupt frame's GPR saves, which get restored on interrupt exit.
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/64e/interrupt: fix nvgprs being clobbered
https://git.kernel.org/powerpc/c/c6ac667b07996929835b512de0e9a988977e6abc
cheers
