[POWERPC] cell: handle SPE kernel mappings that cross segment boundaries

Currently, we have a possibilty that the SLBs setup during context
switch don't cover the entirety of the necessary lscsa and code
regions, if these regions cross a segment boundary.

This change checks the start and end of each region, and inserts a SLB
entry for each, if unique. We also remove the assumption that the
spu_save_code and spu_restore_code reside in the same segment, by using
the specific code array for save and restore.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 3308ed4933e0..314aad357d98 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -201,8 +201,8 @@ int spu_irq_class_0_bottom(struct spu *spu);
 int spu_irq_class_1_bottom(struct spu *spu);
 void spu_irq_setaffinity(struct spu *spu, int cpu);
 
-void spu_setup_kernel_slbs(struct spu *spu,
-                struct spu_lscsa *lscsa, void *code);
+void spu_setup_kernel_slbs(struct spu *spu, struct spu_lscsa *lscsa,
+                void *code, int code_size);
 
 #ifdef CONFIG_KEXEC
 void crash_register_spus(struct list_head *list);