[PATCH v2 03/18] powerpc/85xx: Don't use generic timebase sync on 64-bit

Scott Wood scottwood at freescale.com
Tue Oct 6 20:48:07 PDT 2015

85xx currently uses the generic timebase sync mechanism when
CONFIG_KEXEC is enabled, because 32-bit 85xx kexec support does a hard
reset of each core.  64-bit 85xx kexec does not do this, so we neither
need nor want this (nor is the generic timebase sync code built on

FWIW, I don't like the fact that the hard reset is done on 32-bit
kexec, and I especially don't like the timebase sync being triggered
only on the presence of CONFIG_KEXEC rather than actually booting in
that environment, but that's beyond the scope of this patch...

Signed-off-by: Scott Wood <scottwood at freescale.com>
 arch/powerpc/platforms/85xx/smp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index c2ded03..a0763be 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -344,7 +344,7 @@ struct smp_ops_t smp_85xx_ops = {
 	.cpu_disable	= generic_cpu_disable,
 	.cpu_die	= generic_cpu_die,
+#if defined(CONFIG_KEXEC) && !defined(CONFIG_PPC64)
 	.give_timebase	= smp_generic_give_timebase,
 	.take_timebase	= smp_generic_take_timebase,

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