diff options
Diffstat (limited to 'arch/sparc64/kernel')
| -rw-r--r-- | arch/sparc64/kernel/ktlb.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/ktlb.S b/arch/sparc64/kernel/ktlb.S index d4024ac0d619..964527d2ffa0 100644 --- a/arch/sparc64/kernel/ktlb.S +++ b/arch/sparc64/kernel/ktlb.S @@ -226,6 +226,15 @@ kvmap_dtlb_load: ba,pt %xcc, sun4v_dtlb_load mov %g5, %g3 +kvmap_vmemmap: + sub %g4, %g5, %g5 + srlx %g5, 22, %g5 + sethi %hi(vmemmap_table), %g1 + sllx %g5, 3, %g5 + or %g1, %lo(vmemmap_table), %g1 + ba,pt %xcc, kvmap_dtlb_load + ldx [%g1 + %g5], %g5 + kvmap_dtlb_nonlinear: /* Catch kernel NULL pointer derefs. */ sethi %hi(PAGE_SIZE), %g5 @@ -233,6 +242,13 @@ kvmap_dtlb_nonlinear: bleu,pn %xcc, kvmap_dtlb_longpath nop + /* Do not use the TSB for vmemmap. */ + mov (VMEMMAP_BASE >> 24), %g5 + sllx %g5, 24, %g5 + cmp %g4,%g5 + bgeu,pn %xcc, kvmap_vmemmap + nop + KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load) kvmap_dtlb_tsbmiss: |