[Xen-devel] [PATCH] xen/arm: smpboot: drop unneeded code in start_secondary

[Peng Fan <van.freenix@xxxxxxxxx>]

CPU0 boots up secondary CPUs one by one. Before booting
one secondary CPU, CPU0 will assign hwid to smp_up_cpu
and flush cache. After the secondary CPU boots up,
CPU0 will assign MPIDR_INVALID to smp_up_cpu and flush
cache.

There is no need for secondary CPUs to assign MPIDR_INVALID
to smp_up_cpu. So, drop it.

Signed-off-by: Peng Fan <van.freenix@xxxxxxxxx>
Cc: Julien Grall <julien.grall@xxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/arch/arm/smpboot.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/xen/arch/arm/smpboot.c b/xen/arch/arm/smpboot.c
index c5109bf..6b3c157 100644
--- a/xen/arch/arm/smpboot.c
+++ b/xen/arch/arm/smpboot.c
@@ -309,7 +309,6 @@ void start_secondary(unsigned long boot_phys_offset,
     smp_wmb();
 
     /* Now report this CPU is up */
-    smp_up_cpu = MPIDR_INVALID;
     cpumask_set_cpu(cpuid, &cpu_online_map);
     smp_wmb();
 
-- 
2.6.2


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