From 60b962239a0837869be3e9192003fb8076068b91 Mon Sep 17 00:00:00 2001 From: Benjamin Krill Date: Thu, 27 Feb 2014 15:49:21 +0100 Subject: [PATCH] powerpc/book3e: Fix check for linear mapping in TLB miss handler The previous code added wrong TLBs and causes machine check errors if a driver accessed passed the end of the linear mapping instead of a clean page fault. Signed-off-by: Ralph E. Bellofatto Signed-off-by: Benjamin Krill Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/mm/tlb_low_64e.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/mm/tlb_low_64e.S b/arch/powerpc/mm/tlb_low_64e.S index c95eb32..6bf5050 100644 --- a/arch/powerpc/mm/tlb_low_64e.S +++ b/arch/powerpc/mm/tlb_low_64e.S @@ -1091,7 +1091,8 @@ tlb_load_linear: ld r11,PACATOC(r13) ld r11,linear_map_top@got(r11) ld r10,0(r11) - cmpld cr0,r10,r16 + tovirt(10,10) + cmpld cr0,r16,r10 bge tlb_load_linear_fault /* MAS1 need whole new setup. */ -- 2.7.4