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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-07-23 23:15:59 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-08-20 10:25:11 +1000
commit2d27cfd3286966c04d4192a9db5a6c7ea60eebf1 (patch)
treea9e3feb764da5a2be1a6ef9b3a0bf694e874a424 /arch/powerpc/kernel/setup_64.c
parent32a74949b7337726e76d69f51c48715431126c6c (diff)
powerpc: Remaining 64-bit Book3E support
This contains all the bits that didn't fit in previous patches :-) This includes the actual exception handlers assembly, the changes to the kernel entry, other misc bits and wiring it all up in Kconfig. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
-rw-r--r--arch/powerpc/kernel/setup_64.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 65aced7b833a..87df51720641 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -454,6 +454,24 @@ static void __init irqstack_early_init(void)
#define irqstack_early_init()
#endif
+#ifdef CONFIG_PPC_BOOK3E
+static void __init exc_lvl_early_init(void)
+{
+ unsigned int i;
+
+ for_each_possible_cpu(i) {
+ critirq_ctx[i] = (struct thread_info *)
+ __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+ dbgirq_ctx[i] = (struct thread_info *)
+ __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+ mcheckirq_ctx[i] = (struct thread_info *)
+ __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+ }
+}
+#else
+#define exc_lvl_early_init()
+#endif
+
/*
* Stack space used when we detect a bad kernel stack pointer, and
* early in SMP boots before relocation is enabled.
@@ -513,6 +531,7 @@ void __init setup_arch(char **cmdline_p)
init_mm.brk = klimit;
irqstack_early_init();
+ exc_lvl_early_init();
emergency_stack_init();
#ifdef CONFIG_PPC_STD_MMU_64