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eliminate special FLUSH flag from page table

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This was used to flush a region even if the page table entry had been
cleared.  In theory this was never necessary, but now we've switched to
alias based flushing, the whole set of code associated with it can be dumped.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
James Bottomley
2010-12-22 10:24:36 -06:00
committed by James Bottomley
parent f311847c2f
commit 8b4ae3342d
2 changed files with 7 additions and 68 deletions
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61
arch/parisc/kernel/entry.S
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@ -1206,23 +1206,7 @@ nadtlb_miss_20w:
nop
nadtlb_check_alias_20w:
do_alias spc,t0,t1,va,pte,prot,nadtlb_check_flush_20w
idtlbt pte,prot
rfir
nop
nadtlb_check_flush_20w:
bb,>=,n pte,_PAGE_FLUSH_BIT,nadtlb_emulate
/* Insert a "flush only" translation */
depdi,z 7,7,3,prot
depdi 1,10,1,prot
/* Drop prot bits from pte and convert to page addr for idtlbt */
convert_for_tlb_insert20 pte
do_alias spc,t0,t1,va,pte,prot,nadtlb_emulate
idtlbt pte,prot
@ -1286,7 +1270,7 @@ nadtlb_miss_11:
nop
nadtlb_check_alias_11:
do_alias spc,t0,t1,va,pte,prot,nadtlb_check_flush_11
do_alias spc,t0,t1,va,pte,prot,nadtlb_emulate
idtlba pte,(va)
idtlbp prot,(va)
@ -1294,30 +1278,6 @@ nadtlb_check_alias_11:
rfir
nop
nadtlb_check_flush_11:
bb,>=,n pte,_PAGE_FLUSH_BIT,nadtlb_emulate
/* Insert a "flush only" translation */
zdepi 7,7,3,prot
depi 1,10,1,prot
/* Get rid of prot bits and convert to page addr for idtlba */
depi 0,31,ASM_PFN_PTE_SHIFT,pte
SHRREG pte,(ASM_PFN_PTE_SHIFT-(31-26)),pte
mfsp %sr1,t0 /* Save sr1 so we can use it in tlb inserts */
mtsp spc,%sr1
idtlba pte,(%sr1,va)
idtlbp prot,(%sr1,va)
mtsp t0, %sr1 /* Restore sr1 */
rfir
nop
dtlb_miss_20:
space_adjust spc,va,t0
get_pgd spc,ptp
@ -1363,28 +1323,13 @@ nadtlb_miss_20:
nop
nadtlb_check_alias_20:
do_alias spc,t0,t1,va,pte,prot,nadtlb_check_flush_20
do_alias spc,t0,t1,va,pte,prot,nadtlb_emulate
idtlbt pte,prot
rfir
nop
nadtlb_check_flush_20:
bb,>=,n pte,_PAGE_FLUSH_BIT,nadtlb_emulate
/* Insert a "flush only" translation */
depdi,z 7,7,3,prot
depdi 1,10,1,prot
/* Drop prot bits from pte and convert to page addr for idtlbt */
convert_for_tlb_insert20 pte
idtlbt pte,prot
rfir
nop
#endif
nadtlb_emulate: