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yaml
---
r: 140033
b: refs/heads/master
c: afca252
h: refs/heads/master
i:
  140031: c7c9efa
v: v3
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Helge Deller authored and Kyle McMartin committed Mar 31, 2009
1 parent 8b2cdfc commit 685814f
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Showing 2 changed files with 18 additions and 9 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 445c088f88d63db49598390be3525252d211688f
refs/heads/master: afca2523876301cc6130fc3cc402173eeeb89830
25 changes: 17 additions & 8 deletions trunk/arch/parisc/kernel/entry.S
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Expand Up @@ -505,6 +505,18 @@
STREG \pte,0(\ptep)
.endm

/* bitshift difference between a PFN (based on kernel's PAGE_SIZE)
* to a CPU TLB 4k PFN (4k => 12 bits to shift) */
#define PAGE_ADD_SHIFT (PAGE_SHIFT-12)

/* Drop prot bits and convert to page addr for iitlbt and idtlbt */
.macro convert_for_tlb_insert20 pte
extrd,u \pte,(63-ASM_PFN_PTE_SHIFT)+(63-58)+PAGE_ADD_SHIFT,\
64-PAGE_SHIFT-PAGE_ADD_SHIFT,\pte
depdi _PAGE_SIZE_ENCODING_DEFAULT,63,\
(63-58)+PAGE_ADD_SHIFT,\pte
.endm

/* Convert the pte and prot to tlb insertion values. How
* this happens is quite subtle, read below */
.macro make_insert_tlb spc,pte,prot
Expand Down Expand Up @@ -544,8 +556,7 @@
depi 1,12,1,\prot

/* Drop prot bits and convert to page addr for iitlbt and idtlbt */
extrd,u \pte,(63-ASM_PFN_PTE_SHIFT)+(63-58),64-PAGE_SHIFT,\pte
depdi _PAGE_SIZE_ENCODING_DEFAULT,63,63-58,\pte
convert_for_tlb_insert20 \pte
.endm

/* Identical macro to make_insert_tlb above, except it
Expand Down Expand Up @@ -1244,10 +1255,9 @@ nadtlb_check_flush_20w:
depdi,z 7,7,3,prot
depdi 1,10,1,prot

/* Get rid of prot bits and convert to page addr for idtlbt */
/* Drop prot bits from pte and convert to page addr for idtlbt */
convert_for_tlb_insert20 pte

depdi 0,63,12,pte
extrd,u pte,56,52,pte
idtlbt pte,prot

rfir
Expand Down Expand Up @@ -1403,10 +1413,9 @@ nadtlb_check_flush_20:
depdi,z 7,7,3,prot
depdi 1,10,1,prot

/* Get rid of prot bits and convert to page addr for idtlbt */
/* Drop prot bits from pte and convert to page addr for idtlbt */
convert_for_tlb_insert20 pte

depdi 0,63,12,pte
extrd,u pte,56,32,pte
idtlbt pte,prot

rfir
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