powerpc/603: Switch r0 and r3 in TLB miss handlers

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In preparation of next patch that will perform some additional
calculations to replace comparison, switch the use of r0 and r3
as r0 has some limitations in some instructions like 'addi/subi'.

Also remove outdated comments about the meaning of each register.
The registers are used for many things and it would be difficult
to accurately describe all things done with a given register. The
function is now small enough to get a global view without much
description.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/566af5e87685b1a85d3182549c0d520ce2d8877a.1724173828.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2024-08-20 19:23:56 +02:00 • committed by Michael Ellerman

parent 82ef440f9a

commit 31c0e137ec

1 changed files with 38 additions and 56 deletions

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arch/powerpc/kernel/head_book3s_32.S

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