diff options
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 04f638d82fb3..00d3b65eba4c 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -432,9 +432,18 @@ void __init setup_system(void) DBG(" <- setup_system()\n"); } +static u64 slb0_limit(void) +{ + if (cpu_has_feature(CPU_FTR_1T_SEGMENT)) { + return 1UL << SID_SHIFT_1T; + } + return 1UL << SID_SHIFT; +} + #ifdef CONFIG_IRQSTACKS static void __init irqstack_early_init(void) { + u64 limit = slb0_limit(); unsigned int i; /* @@ -444,10 +453,10 @@ static void __init irqstack_early_init(void) for_each_possible_cpu(i) { softirq_ctx[i] = (struct thread_info *) __va(lmb_alloc_base(THREAD_SIZE, - THREAD_SIZE, 0x10000000)); + THREAD_SIZE, limit)); hardirq_ctx[i] = (struct thread_info *) __va(lmb_alloc_base(THREAD_SIZE, - THREAD_SIZE, 0x10000000)); + THREAD_SIZE, limit)); } } #else @@ -478,7 +487,7 @@ static void __init exc_lvl_early_init(void) */ static void __init emergency_stack_init(void) { - unsigned long limit; + u64 limit; unsigned int i; /* @@ -490,7 +499,7 @@ static void __init emergency_stack_init(void) * bringup, we need to get at them in real mode. This means they * must also be within the RMO region. */ - limit = min(0x10000000ULL, lmb.rmo_size); + limit = min(slb0_limit(), lmb.rmo_size); for_each_possible_cpu(i) { unsigned long sp; |