[PATCH] powerpc: Make UP -> SMP kexec work again
For UP to SMP kexec to work we need to jump into pSeries_secondary_smp_init
event on a UP + KEXEC kernel. The secondary cpus will not find their hw_cpu_id
in the paca and so they'll jump into kexec_wait, ready for a kexec.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 4156596..2b03a09 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -157,8 +157,7 @@
SET_REG_IMMEDIATE(r4, .hmt_init)
mtctr r4
bctr
-#else
-#ifdef CONFIG_SMP
+#elif defined(CONFIG_SMP) || defined(CONFIG_KEXEC)
LOAD_REG_IMMEDIATE(r4, .pSeries_secondary_smp_init)
mtctr r4
mr r3,r24
@@ -166,7 +165,6 @@
#else
BUG_OPCODE
#endif
-#endif
/* This value is used to mark exception frames on the stack. */
.section ".toc","aw"
