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powerpc/rtas: Remove machine_check_in_rtas()

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machine_check_in_rtas() is just a trap.

Do the trap directly in the machine check exception handler.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/78899f40f89cb3c4f69bdff7f04eb6ec7cb753d5.1585670437.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy 2020-03-31 16:03:43 +00:00 committed by Michael Ellerman
parent e6209318d6
commit 32746dfe4c
2 changed files with 1 additions and 7 deletions
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6
arch/powerpc/kernel/entry_32.S
View File

@ -1380,10 +1380,4 @@ _GLOBAL(enter_rtas)
mtspr SPRN_SRR0,r8
mtspr SPRN_SRR1,r9
RFI /* return to caller */
.globl machine_check_in_rtas
machine_check_in_rtas:
twi 31,0,0
/* XXX load up BATs and panic */
#endif /* CONFIG_PPC_RTAS */

2
arch/powerpc/kernel/head_32.S
View File

@ -297,7 +297,7 @@ MachineCheck:
cmpwi cr1, r4, 0
#endif
beq cr1, machine_check_tramp
b machine_check_in_rtas
twi 31, 0, 0
#else
b machine_check_tramp
#endif