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Diffstat (limited to 'arch/sparc/kernel/tsb.S')
-rw-r--r--arch/sparc/kernel/tsb.S11
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S
index 10689cfd0ad4..07c0df924960 100644
--- a/arch/sparc/kernel/tsb.S
+++ b/arch/sparc/kernel/tsb.S
@@ -455,13 +455,16 @@ __tsb_context_switch:
.type copy_tsb,#function
copy_tsb: /* %o0=old_tsb_base, %o1=old_tsb_size
* %o2=new_tsb_base, %o3=new_tsb_size
+ * %o4=page_size_shift
*/
sethi %uhi(TSB_PASS_BITS), %g7
srlx %o3, 4, %o3
- add %o0, %o1, %g1 /* end of old tsb */
+ add %o0, %o1, %o1 /* end of old tsb */
sllx %g7, 32, %g7
sub %o3, 1, %o3 /* %o3 == new tsb hash mask */
+ mov %o4, %g1 /* page_size_shift */
+
661: prefetcha [%o0] ASI_N, #one_read
.section .tsb_phys_patch, "ax"
.word 661b
@@ -486,9 +489,9 @@ copy_tsb: /* %o0=old_tsb_base, %o1=old_tsb_size
/* This can definitely be computed faster... */
srlx %o0, 4, %o5 /* Build index */
and %o5, 511, %o5 /* Mask index */
- sllx %o5, PAGE_SHIFT, %o5 /* Put into vaddr position */
+ sllx %o5, %g1, %o5 /* Put into vaddr position */
or %o4, %o5, %o4 /* Full VADDR. */
- srlx %o4, PAGE_SHIFT, %o4 /* Shift down to create index */
+ srlx %o4, %g1, %o4 /* Shift down to create index */
and %o4, %o3, %o4 /* Mask with new_tsb_nents-1 */
sllx %o4, 4, %o4 /* Shift back up into tsb ent offset */
TSB_STORE(%o2 + %o4, %g2) /* Store TAG */
@@ -496,7 +499,7 @@ copy_tsb: /* %o0=old_tsb_base, %o1=old_tsb_size
TSB_STORE(%o2 + %o4, %g3) /* Store TTE */
80: add %o0, 16, %o0
- cmp %o0, %g1
+ cmp %o0, %o1
bne,pt %xcc, 90b
nop