aboutsummaryrefslogtreecommitdiff
path: root/arch/parisc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/kernel/entry.S25
1 files changed, 17 insertions, 8 deletions
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 0f7ff938b06..4e9dd15e076 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -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
@@ -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
@@ -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
@@ -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