linux/arch/powerpc/include
Christophe Leroy 0df977eafc powerpc/6xx: Don't use SPRN_SPRG2 for storing stack pointer while in RTAS
When calling RTAS, the stack pointer is stored in SPRN_SPRG2
in order to be able to restore it in case of machine check in RTAS.

As machine check is not a perfomance critical path, this patch
frees SPRN_SPRG2 by using a field in thread struct instead.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-02-22 00:10:16 +11:00
..
asm powerpc/6xx: Don't use SPRN_SPRG2 for storing stack pointer while in RTAS 2019-02-22 00:10:16 +11:00
uapi/asm powerpc/perf: Update perf_regs structure to include MMCRA 2019-01-08 19:22:47 +11:00