[PATCH 1/2] powerpc/32: Fix vmap stack - Do not activate MMU before reading task struct

[Michael Ellerman]

On Mon, 7 Sep 2020 13:42:09 +0000 (UTC), Christophe Leroy wrote:
> We need r1 to be properly set before activating MMU, so
> reading task_struct->stack must be done with MMU off.
> 
> This means we need an additional register to play with MSR
> bits while r11 now points to the stack. For that, move r10
> back to CR (As is already done for hash MMU) and use r10.
> 
> [...]

Applied to powerpc/next.

[1/2] powerpc/32: Fix vmap stack - Do not activate MMU before reading task struct
      https://git.kernel.org/powerpc/c/c118c7303ad528be8ff2aea8cd1ee15452c763f0
[2/2] powerpc/32: Fix vmap stack - Properly set r1 before activating MMU
      https://git.kernel.org/powerpc/c/da7bb43ab9da39bcfed0d146ce94e1f0cbae4ca0

cheers