diff options
Diffstat (limited to 'arch/ppc64/kernel/iSeries_htab.c')
| -rw-r--r-- | arch/ppc64/kernel/iSeries_htab.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/ppc64/kernel/iSeries_htab.c b/arch/ppc64/kernel/iSeries_htab.c index 2192055a90a..9a2be3abf34 100644 --- a/arch/ppc64/kernel/iSeries_htab.c +++ b/arch/ppc64/kernel/iSeries_htab.c @@ -84,6 +84,25 @@ static long iSeries_hpte_insert(unsigned long hpte_group, unsigned long va, return (secondary << 3) | (slot & 7); } +long iSeries_hpte_bolt_or_insert(unsigned long hpte_group, + unsigned long va, unsigned long prpn, unsigned long vflags, + unsigned long rflags) +{ + long slot; + hpte_t lhpte; + + slot = HvCallHpt_findValid(&lhpte, va >> PAGE_SHIFT); + + if (lhpte.v & HPTE_V_VALID) { + /* Bolt the existing HPTE */ + HvCallHpt_setSwBits(slot, 0x10, 0); + HvCallHpt_setPp(slot, PP_RWXX); + return 0; + } + + return iSeries_hpte_insert(hpte_group, va, prpn, vflags, rflags); +} + static unsigned long iSeries_hpte_getword0(unsigned long slot) { hpte_t hpte; |