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(parent: 9d3c18a) | patch
powerpc/40x: Save SRR0/SRR1 and r10/r11 earlier in critical exception
authorChristophe Leroy <christophe.leroy@csgroup.eu>
Fri, 12 Mar 2021 12:50:13 +0000 (12:50 +0000)
committerMichael Ellerman <mpe@ellerman.id.au>
Mon, 29 Mar 2021 02:22:03 +0000 (13:22 +1100)
commitfcd4b43c36c69aa41e79a511edbb06c7020a6061
treeb74de45120716ff2a6e5dfe6ee25ce02df1f2074tree | snapshot
parent9d3c18a11a930afe65d33527300a42e0872c744dcommit | diff
powerpc/40x: Save SRR0/SRR1 and r10/r11 earlier in critical exception

In order to be able to switch MMU on in exception prolog, save
SRR0 and SRR1 earlier.

Also save r10 and r11 into stack earlier to better match with the
normal exception prolog.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/79a93f253d72dc97ac968c9c62b5066960b688ed.1615552866.git.christophe.leroy@csgroup.eu
arch/powerpc/kernel/entry_32.S diff | blob | history
arch/powerpc/kernel/head_40x.S diff | blob | history
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