diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 2002-02-06 19:29:07 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 2002-02-06 19:29:07 +0000 |
| commit | 2892ce47d1355fb9a91721ef6f7950a99c17b1c7 (patch) | |
| tree | 21170e7747ad1655271ac1893d5cd523e15bd62e /sys/arch/hppa | |
| parent | c678c6a3c1b76f751945485e77e37599d5a2ec5a (diff) | |
better flushing/purging of removed/changed mappings, hack around the pv/vp desync
Diffstat (limited to 'sys/arch/hppa')
| -rw-r--r-- | sys/arch/hppa/hppa/pmap.c | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/sys/arch/hppa/hppa/pmap.c b/sys/arch/hppa/hppa/pmap.c index 4250eb23fe2..0d56ab654bd 100644 --- a/sys/arch/hppa/hppa/pmap.c +++ b/sys/arch/hppa/hppa/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.55 2002/02/04 18:13:05 mickey Exp $ */ +/* $OpenBSD: pmap.c,v 1.56 2002/02/06 19:29:06 mickey Exp $ */ /* * Copyright (c) 1998-2001 Michael Shalayeff @@ -377,6 +377,8 @@ pmap_alloc_pv(void) #endif pvp->pvp_freelist = pv->pv_next; pv->pv_next = NULL; + pv->pv_hash = NULL; + pv->pv_pmap = NULL; return pv; } @@ -453,8 +455,12 @@ pmap_enter_pv(pmap_t pmap, vaddr_t va, u_int tlbprot, u_int tlbpage, DPRINTF(PDB_ENTER, ("pmap_enter_pv: adding to the list\n")); #ifdef PMAPDEBUG for (npv = pv; npv; npv = npv->pv_next) - if (pmap == npv->pv_pmap && va == npv->pv_va) - panic("pmap_enter_pv: already in pv_tab"); + if (pmap == npv->pv_pmap && va == npv->pv_va) { + printf("pmap_enter_pv: %p already in pv_tab", + npv); + pmap_enter_va(npv); /* HACK UGLY HACK HACK */ + return (npv); + } #endif hpv = pv; npv = pv->pv_next; @@ -503,8 +509,8 @@ pmap_remove_pv(struct pv_entry *ppv, struct pv_entry *pv) ppv = pv->pv_next; pmap_remove_va(pv); if (ppv) { - /*npv->pv_tlbprot |= pv->pv_tlbprot & - (TLB_DIRTY | TLB_REF);*/ + ppv->pv_tlbprot |= pv->pv_tlbprot & + (TLB_DIRTY | TLB_REF); *pv = *ppv; pmap_free_pv(ppv); } else @@ -514,6 +520,8 @@ pmap_remove_pv(struct pv_entry *ppv, struct pv_entry *pv) ; if (pv) { + pv->pv_tlbprot |= ppv->pv_tlbprot & + (TLB_DIRTY | TLB_REF); pv->pv_next = ppv->pv_next; pmap_remove_va(ppv); pmap_free_pv(ppv); @@ -1098,15 +1106,16 @@ pmap_page_protect(pg, prot) pv->pv_tlbprot &= ~TLB_AR_MASK; pv->pv_tlbprot |= tlbprot; - pmap_clear_va(pv->pv_space, pv->pv_va); - /* * Purge the current TLB entry (if any) * to force a fault and reload with the * new protection. */ - pdtlb(pv->pv_space, pv->pv_va); + ficache(pv->pv_space, pv->pv_va, NBPG); pitlb(pv->pv_space, pv->pv_va); + fdcache(pv->pv_space, pv->pv_va, NBPG); + pdtlb(pv->pv_space, pv->pv_va); + pmap_clear_va(pv->pv_space, pv->pv_va); } } splx(s); @@ -1175,14 +1184,15 @@ pmap_protect(pmap, sva, eva, prot) pv->pv_tlbprot &= ~TLB_AR_MASK; pv->pv_tlbprot |= tlbprot; - pmap_clear_va(space, pv->pv_va); - /* * Purge the current TLB entry (if any) to force * a fault and reload with the new protection. */ - pitlb(space, pv->pv_va); - pdtlb(space, pv->pv_va); + ficache(space, sva, NBPG); + pitlb(space, sva); + fdcache(space, sva, NBPG); + pdtlb(space, sva); + pmap_clear_va(space, sva); } } } @@ -1503,10 +1513,8 @@ pmap_kenter_pa(va, pa, prot) pv->pv_pmap = pmap_kernel(); pv->pv_space = HPPA_SID_KERNEL; pv->pv_tlbpage = tlbbtop(pa); - pv->pv_tlbprot = HPPA_PID_KERNEL | + pv->pv_tlbprot = HPPA_PID_KERNEL | TLB_WIRED | pmap_prot(pmap_kernel(), prot) | - TLB_WIRED | /* TLB_REF | TLB_DIRTY | */ - TLB_UNCACHEABLE | ((pa & HPPA_IOSPACE) == HPPA_IOSPACE? TLB_UNCACHEABLE : 0); pmap_enter_va(pv); } |