Re: [PATCH for 5.10] powerpc/32s: Fix RTAS machine check with VMAP stack

2021-01-13 Thread Sasha Levin
On Wed, Jan 13, 2021 at 06:40:20AM +, Christophe Leroy wrote: This is backport for 5.10 (cherry picked from commit 98bf2d3f4970179c702ef64db658e0553bc6ef3a) When we have VMAP stack, exception prolog 1 sets r1, not r11. When it is not an RTAS machine check, don't trash r1 because it is need

[PATCH for 5.10] powerpc/32s: Fix RTAS machine check with VMAP stack

2021-01-12 Thread Christophe Leroy
This is backport for 5.10 (cherry picked from commit 98bf2d3f4970179c702ef64db658e0553bc6ef3a) When we have VMAP stack, exception prolog 1 sets r1, not r11. When it is not an RTAS machine check, don't trash r1 because it is needed by prolog 1. Fixes: da7bb43ab9da ("powerpc/32: Fix vmap stack -