The interrupt stacks need to be indexed by the physical cpu since the critical, debug and machine check handlers use the contents of SPRN_PIR to index the critirq_ctx, dbgirq_ctx, and mcheckirq_ctx arrays.
Signed-off-by: Dave Kleikamp <sha...@linux.vnet.ibm.com> --- arch/powerpc/kernel/irq.c | 15 ++++++++------- arch/powerpc/kernel/setup_32.c | 9 +++++---- 2 files changed, 13 insertions(+), 11 deletions(-) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index d3ce67c..52e9c95 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -446,22 +446,23 @@ struct thread_info *mcheckirq_ctx[NR_CPUS] __read_mostly; void exc_lvl_ctx_init(void) { struct thread_info *tp; - int i; + int i, hw_cpu; for_each_possible_cpu(i) { - memset((void *)critirq_ctx[i], 0, THREAD_SIZE); - tp = critirq_ctx[i]; + hw_cpu = get_hard_smp_processor_id(i); + memset((void *)critirq_ctx[hw_cpu], 0, THREAD_SIZE); + tp = critirq_ctx[hw_cpu]; tp->cpu = i; tp->preempt_count = 0; #ifdef CONFIG_BOOKE - memset((void *)dbgirq_ctx[i], 0, THREAD_SIZE); - tp = dbgirq_ctx[i]; + memset((void *)dbgirq_ctx[hw_cpu], 0, THREAD_SIZE); + tp = dbgirq_ctx[hw_cpu]; tp->cpu = i; tp->preempt_count = 0; - memset((void *)mcheckirq_ctx[i], 0, THREAD_SIZE); - tp = mcheckirq_ctx[i]; + memset((void *)mcheckirq_ctx[hw_cpu], 0, THREAD_SIZE); + tp = mcheckirq_ctx[hw_cpu]; tp->cpu = i; tp->preempt_count = HARDIRQ_OFFSET; #endif diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index a10ffc8..93666f9 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -258,17 +258,18 @@ static void __init irqstack_early_init(void) #if defined(CONFIG_BOOKE) || defined(CONFIG_40x) static void __init exc_lvl_early_init(void) { - unsigned int i; + unsigned int i, hw_cpu; /* interrupt stacks must be in lowmem, we get that for free on ppc32 * as the memblock is limited to lowmem by MEMBLOCK_REAL_LIMIT */ for_each_possible_cpu(i) { - critirq_ctx[i] = (struct thread_info *) + hw_cpu = get_hard_smp_processor_id(i); + critirq_ctx[hw_cpu] = (struct thread_info *) __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE)); #ifdef CONFIG_BOOKE - dbgirq_ctx[i] = (struct thread_info *) + dbgirq_ctx[hw_cpu] = (struct thread_info *) __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE)); - mcheckirq_ctx[i] = (struct thread_info *) + mcheckirq_ctx[hw_cpu] = (struct thread_info *) __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE)); #endif } -- 1.7.1 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev