diff options
| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2017-12-27 10:38:55 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2018-01-21 15:32:23 +0000 |
| commit | 62d1c95d577ce4d40189e4c01025b616917e3c65 (patch) | |
| tree | 0f33dd031408bad55c4422f33ef7edf498cfd445 /arch/arm | |
| parent | c7780ab56c091a9ba95a3278e6e1d9c73afb5052 (diff) | |
| download | linux-62d1c95d577ce4d40189e4c01025b616917e3c65.tar.bz2 | |
ARM: 8739/1: NOMMU: Setup VBAR/Hivecs for secondaries cores
With switch to dynamic exception base address setting, VBAR/Hivecs
set only for boot CPU, but secondaries stay unaware of that. That
might lead to weird effects when trying up to bring up secondaries.
Fixes: ad475117d201 ("ARM: 8649/2: nommu: remove Hivecs configuration is asm")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: afzal mohammed <afzal.mohd.ma@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/memory.h | 1 | ||||
| -rw-r--r-- | arch/arm/kernel/smp.c | 3 | ||||
| -rw-r--r-- | arch/arm/mm/nommu.c | 4 |
3 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 1f54e4e98c1e..496667703693 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -88,6 +88,7 @@ #else /* CONFIG_MMU */ #ifndef __ASSEMBLY__ +extern unsigned long setup_vectors_base(void); extern unsigned long vectors_base; #define VECTORS_BASE vectors_base #endif diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index b4fbf00ee4ad..2da087926ebe 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -379,6 +379,9 @@ asmlinkage void secondary_start_kernel(void) cpu_init(); +#ifndef CONFIG_MMU + setup_vectors_base(); +#endif pr_debug("CPU%u: Booted secondary processor\n", cpu); preempt_disable(); diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index e4370810f4f1..7c087961b7ce 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -31,7 +31,7 @@ struct mpu_rgn_info mpu_rgn_info; #ifdef CONFIG_CPU_CP15 #ifdef CONFIG_CPU_HIGH_VECTOR -static unsigned long __init setup_vectors_base(void) +unsigned long setup_vectors_base(void) { unsigned long reg = get_cr(); @@ -57,7 +57,7 @@ static inline bool security_extensions_enabled(void) return 0; } -static unsigned long __init setup_vectors_base(void) +unsigned long setup_vectors_base(void) { unsigned long base = 0, reg = get_cr(); |