[PATCH v2] powerpc/powermac: Fix low_sleep_handler with CONFIG_VMAP_STACK

[Michael Ellerman]

On Tue, 8 Dec 2020 05:24:19 +0000 (UTC), Christophe Leroy wrote:
> low_sleep_handler() can't restore the context from standard
> stack because the stack can hardly be accessed with MMU OFF.
> 
> Store everything in a global storage area instead of storing
> a pointer to the stack in that global storage area.
> 
> To avoid a complete churn of the function, still use r1 as
> the pointer to the storage area during restore.

Applied to powerpc/next.

[1/1] powerpc/powermac: Fix low_sleep_handler with CONFIG_VMAP_STACK
      https://git.kernel.org/powerpc/c/db972a3787d12b1ce9ba7a31ec376d8a79e04c47

cheers