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[4/7] ARM: nommu: do not initialise page tables in secondary_data structure

Message ID 1368532137-8871-5-git-send-email-jonathan.austin@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jonathan Austin May 14, 2013, 11:48 a.m. UTC 
From: Will Deacon <will.deacon@arm.com>

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>
---
 arch/arm/kernel/smp.c |    2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 47ab905..b476002 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));