Commit fd4f683d authored Jun 11, 2009 by David Howells Committed by Linus Torvalds Jun 11, 2009

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>

parent 07a2039b

arch/mn10300/mm/tlb-mn10300.S

+0 −18

Original line number	Diff line number	Diff line
		@@ -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