[PATCH 10/15] powerpc: Define slb0_limit() for BOOK3E

[Michael Ellerman]

From: Michael Ellerman <michael at ellerman.id.au>

On BOOK3E we don't have an SLB 0, but the equivalent concept is the
bolted entry mapping the kernel. Currently this is a 1G entry, so
for now hardcode that. This will probably need to be reworked in
future.

Signed-off-by: Michael Ellerman <michael at ellerman.id.au>
---
 arch/powerpc/kernel/setup_64.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 91a5cc5..3d0daf4 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -436,10 +436,14 @@ void __init setup_system(void)
 
 static u64 slb0_limit(void)
 {
+#ifdef CONFIG_PPC_BOOK3E
+	return 1 << 30;
+#else
 	if (cpu_has_feature(CPU_FTR_1T_SEGMENT)) {
 		return 1UL << SID_SHIFT_1T;
 	}
 	return 1UL << SID_SHIFT;
+#endif
 }
 
 static void __init irqstack_early_init(void)
-- 
1.7.1