powerpc/40x: Avoid using r12 in TLB miss handlers

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Let's reduce the number of registers used in TLB miss handlers.

We have both r9 and r12 available for any temporary use.

r9 is enough, avoid using r12.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/7f330e971952abb2645fb9ca4310c0f527e84dcb.1590079969.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2020-05-21 16:56:03 +00:00 • committed by Michael Ellerman

parent 455531e9d8

commit 797f4016f6

1 changed files with 33 additions and 37 deletions

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arch/powerpc/kernel/head_40x.S

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