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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-06-29 11:44:43 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-06-29 11:44:43 +0100 |
| commit | 3c0c01ab742ddfaf6b6f2d64b890e77cda4b7727 (patch) | |
| tree | d0f196c53d209f44190fd8a6481823b7770866e6 /arch/arm/kernel/smp.c | |
| parent | cbd379b10019617457bda31eb243890f4377fa3e (diff) | |
| parent | 809e660f438fc5a69bf57630a85bcd8112263f37 (diff) | |
Merge branch 'devel-stable' into for-next
Conflicts:
arch/arm/Makefile
arch/arm/include/asm/glue-proc.h
Diffstat (limited to 'arch/arm/kernel/smp.c')
| -rw-r--r-- | arch/arm/kernel/smp.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 5919eb451bb..c5fb5469054 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -45,6 +45,7 @@ #include <asm/smp_plat.h> #include <asm/virt.h> #include <asm/mach/arch.h> +#include <asm/mpu.h> /* * as from 2.5, kernels no longer have an init_tasks structure @@ -78,6 +79,13 @@ void __init smp_set_ops(struct smp_operations *ops) smp_ops = *ops; }; +static unsigned long get_arch_pgd(pgd_t *pgd) +{ + phys_addr_t pgdir = virt_to_phys(pgd); + BUG_ON(pgdir & ARCH_PGD_MASK); + return pgdir >> ARCH_PGD_SHIFT; +} + int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle) { int ret; @@ -87,8 +95,14 @@ 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; - secondary_data.pgdir = virt_to_phys(idmap_pgd); - secondary_data.swapper_pg_dir = virt_to_phys(swapper_pg_dir); +#ifdef CONFIG_ARM_MPU + secondary_data.mpu_rgn_szr = mpu_rgn_info.rgns[MPU_RAM_REGION].drsr; +#endif + +#ifdef CONFIG_MMU + secondary_data.pgdir = get_arch_pgd(idmap_pgd); + secondary_data.swapper_pg_dir = get_arch_pgd(swapper_pg_dir); +#endif __cpuc_flush_dcache_area(&secondary_data, sizeof(secondary_data)); outer_clean_range(__pa(&secondary_data), __pa(&secondary_data + 1)); @@ -112,9 +126,8 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle) pr_err("CPU%u: failed to boot: %d\n", cpu, ret); } - secondary_data.stack = NULL; - secondary_data.pgdir = 0; + memset(&secondary_data, 0, sizeof(secondary_data)); return ret; } |