From: Will Deacon <will.deacon@arm.com>
Date: Tue, 28 Feb 2012 13:02:59 +0000 (+0000)
Subject: ARM: nommu: do not initialise page tables in secondary_data structure
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c4a1f032ed35d744e3d74b8aebe8d85f29aecd88;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ARM: nommu: do not initialise page tables in secondary_data structure

nommu systems do not require any page tables, so don't try to initialise
them when bringing up secondary cores.

Signed-off-by: Will Deacon <will.deacon@arm.com>
---

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 550d63cef68e..44d1c00dc45f 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -87,8 +87,10 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
 	 * its stack and the page tables.
 	 */
 	secondary_data.stack = task_stack_page(idle) + THREAD_START_SP;
+#ifdef CONFIG_MMU
 	secondary_data.pgdir = virt_to_phys(idmap_pgd);
 	secondary_data.swapper_pg_dir = virt_to_phys(swapper_pg_dir);
+#endif
 	__cpuc_flush_dcache_area(&secondary_data, sizeof(secondary_data));
 	outer_clean_range(__pa(&secondary_data), __pa(&secondary_data + 1));