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-rw-r--r--arch/powerpc/mm/slb_low.S8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
index 1c503d07e0fb..1519617aab36 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -149,7 +149,13 @@ END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT)
* For userspace addresses, make sure this is region 0.
*/
cmpdi r9, 0
- bne 8f
+ bne- 8f
+ /*
+ * user space make sure we are within the allowed limit
+ */
+ ld r11,PACA_ADDR_LIMIT(r13)
+ cmpld r3,r11
+ bge- 8f
/* when using slices, we extract the psize off the slice bitmaps
* and then we need to get the sllp encoding off the mmu_psize_defs