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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>
This commit is contained in:
David Howells 2009-06-11 13:08:32 +01:00 committed by Linus Torvalds
parent 07a2039b8e
commit fd4f683d04
1 changed files with 0 additions and 18 deletions
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18
arch/mn10300/mm/tlb-mn10300.S
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@ -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