diff options
| author | Benjamin Krill <ben@codiert.org> | 2014-02-27 15:49:21 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-03-07 15:54:51 +1100 |
| commit | 60b962239a0837869be3e9192003fb8076068b91 (patch) | |
| tree | 76c3ae723ca0c4950656a638342b456b9966d1f9 /arch | |
| parent | eb3b80f676c8b610bcf5e3ba58d2876a04f74b16 (diff) | |
| download | linux-60b962239a0837869be3e9192003fb8076068b91.tar.bz2 | |
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 <ralphbel@us.ibm.com>
Signed-off-by: Benjamin Krill <ben@codiert.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/tlb_low_64e.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/mm/tlb_low_64e.S b/arch/powerpc/mm/tlb_low_64e.S index c95eb323e9ae..6bf50507a4b5 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. */ |