diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 2002-05-20 03:33:12 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 2002-05-20 03:33:12 +0000 |
| commit | a50ec89934817d5aabe07cea7a32308a5a94bf58 (patch) | |
| tree | fcd6fd64a360a370aed7e28be2aa410f7c1c10a7 /sys | |
| parent | e7e22cfda6f5cb9a6ac962c0dc98e0666b44e3f2 (diff) | |
gateway page could be cachable, it's not written into.
whaen changing protection on the page reset
the dirty bit along w/ the write, save it to the pv-header.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/hppa/hppa/pmap.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/sys/arch/hppa/hppa/pmap.c b/sys/arch/hppa/hppa/pmap.c index a98775085f4..b5589f1badd 100644 --- a/sys/arch/hppa/hppa/pmap.c +++ b/sys/arch/hppa/hppa/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.74 2002/05/20 01:24:26 mickey Exp $ */ +/* $OpenBSD: pmap.c,v 1.75 2002/05/20 03:33:11 mickey Exp $ */ /* * Copyright (c) 1998-2002 Michael Shalayeff @@ -296,7 +296,8 @@ pmap_pte_set(pt_entry_t *pde, vaddr_t va, pt_entry_t pte) hppa_trunc_page(pte) != (paddr_t)&gateway_page) panic("pmap_pte_set: invalid pte"); - if (pte && !(pte & PTE_PROT(TLB_UNCACHABLE))) { + if (pte && !(pte & PTE_PROT(TLB_UNCACHABLE)) && + hppa_trunc_page(pte) != (paddr_t)&gateway_page) { printf("pmap_pte_set: cached pte\n"); Debugger(); } @@ -578,7 +579,7 @@ pmap_init() panic("pmap_init: cannot allocate pde"); pmap_pte_set(pde, SYSCALLGATE, (paddr_t)&gateway_page | - PTE_PROT(TLB_UNCACHABLE|TLB_GATE_PROT)); + PTE_PROT(TLB_GATE_PROT)); } } @@ -857,6 +858,8 @@ pmap_write_protect(pmap, sva, eva, prot) { pt_entry_t *pde, pte; u_int tlbprot, pdemask; + struct pv_head *pvh; + int bank, off; DPRINTF(PDB_FOLLOW|PDB_PMAP, ("pmap_write_protect(%p, %x, %x, %x)\n", pmap, sva, eva, prot)); @@ -886,11 +889,23 @@ pmap_write_protect(pmap, sva, eva, prot) if ((pte & PTE_PROT(TLB_AR_MASK)) == tlbprot) continue; + bank = vm_physseg_find(atop(pte), &off); + if (bank == -1) { + printf("pmap_page_remove: unmanaged page?\n"); + return; + } + pvh = &vm_physmem[bank].pmseg.pvhead[off]; + simple_lock(&pvh->pvh_lock); + pvh->pvh_attrs |= pmap_pvh_attrs(pte); + simple_unlock(&pvh->pvh_lock); + ficache(pmap->pm_space, sva, PAGE_SIZE); pitlb(pmap->pm_space, sva); fdcache(pmap->pm_space, sva, PAGE_SIZE); pdtlb(pmap->pm_space, sva); + if (!(tlbprot & TLB_WRITE)) + pte &= ~PTE_PROT(TLB_DIRTY); pte &= ~PTE_PROT(TLB_AR_MASK); pte |= tlbprot; pmap_pte_set(pde, sva, pte); |