MN10300: Don't set the dirty bit in the DTLB entries in the TLB-miss handler

Remove the special handling for the Data TLB entry dirty bit in the TLB-miss
handler.  As the code stands, all that it does is to cause us to take a second
data address exception to set the dirty bit.  Instead, we can just let
pte_mkdirty() set the bit.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/mn10300/mm/tlb-mn10300.S b/arch/mn10300/mm/tlb-mn10300.S
index 789208094e985ec6a02f25c666492b5735c58bb9..7095147dcb8ba2f83bbad869b7b2e4366dd4a6a5 100644 (file)
--- a/arch/mn10300/mm/tlb-mn10300.S
+++ b/arch/mn10300/mm/tlb-mn10300.S
@@ -165,24 +165,6 @@ ENTRY(itlb_aerror)
 ENTRY(dtlb_aerror)
        and     ~EPSW_NMID,epsw
        add     -4,sp
-       mov     d1,(sp)
-
-       movhu   (MMUFCR_DFC),d1                 # is it the initial valid write
-                                               # to this page?
-       and     MMUFCR_xFC_INITWR,d1
-       beq     dtlb_pagefault                  # jump if not
-
-       mov     (DPTEL),d1                      # set the dirty bit
-                                               # (don't replace with BSET!)
-       or      _PAGE_DIRTY,d1
-       mov     d1,(DPTEL)
-       mov     (sp),d1
-       add     4,sp
-       rti
-
-       ALIGN
-dtlb_pagefault:
-       mov     (sp),d1
        SAVE_ALL
        add     -4,sp                           # need to pass three params