We already allocated critical/machine/debug check exceptions, but
we also should initialize those associated kernel stack pointers
for use by special exceptions in the PACA.
Signed-off-by: Tiejun Chen <tiejun.c...@windriver.com>
---
arch/powerpc/kernel/setup_64.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 278ca93..5c96d92 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -526,14 +526,20 @@ static void __init exc_lvl_early_init(void)
extern unsigned int exc_debug_debug_book3e;
unsigned int i;
+ unsigned long sp;
for_each_possible_cpu(i) {
- critirq_ctx[i] = (struct thread_info *)
- __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
- dbgirq_ctx[i] = (struct thread_info *)
- __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
- mcheckirq_ctx[i] = (struct thread_info *)
- __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
+ sp = memblock_alloc(THREAD_SIZE, THREAD_SIZE);
+ critirq_ctx[i] = (struct thread_info *)__va(sp);
+ paca[i].crit_kstack = __va(sp + THREAD_SIZE);
+
+ sp = memblock_alloc(THREAD_SIZE, THREAD_SIZE);
+ dbgirq_ctx[i] = (struct thread_info *)__va(sp);
+ paca[i].dbg_kstack = __va(sp + THREAD_SIZE);
+
+ sp = memblock_alloc(THREAD_SIZE, THREAD_SIZE);
+ mcheckirq_ctx[i] = (struct thread_info *)__va(sp);
+ paca[i].mc_kstack = __va(sp + THREAD_SIZE);
}
if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC))
--
1.7.9.5
--
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