[PATCH] powerpc/mm: Invalidate partition table cache on host proc tbl base update

[Suraj Jitindar Singh]

The host process table base is stored in the partition table by calling
the function native_register_process_table(). Currently this just sets
the entry in memory and is missing a proceeding cache invalidation
instruction. Any update to the partition table should be followed by a
cache invalidation instruction specifying invalidation of the caching of
any partition table entries (RIC = 2, PRS = 0).

We already have a function to update the partition table with the
required cache invalidation instructions - mmu_partition_table_set_entry().
Update the native_register_process_table() function to call
mmu_partition_table_set_entry(), this ensures all appropriate
invalidation will be performed.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh at gmail.com>
---
 arch/powerpc/mm/pgtable-radix.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index 671a45d..1d5178f 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -33,7 +33,8 @@ static int native_register_process_table(unsigned long base, unsigned long pg_sz
 {
 	unsigned long patb1 = base | table_size | PATB_GR;
 
-	partition_tb->patb1 = cpu_to_be64(patb1);
+	mmu_partition_table_set_entry(0, be64_to_cpu(partition_tb->patb0),
+				      patb1);
 	return 0;
 }
 
-- 
2.9.4