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Diffstat (limited to 'sys/arch/mips64/mips64/pmap.c')
-rw-r--r--sys/arch/mips64/mips64/pmap.c45
1 files changed, 32 insertions, 13 deletions
diff --git a/sys/arch/mips64/mips64/pmap.c b/sys/arch/mips64/mips64/pmap.c
index a57a5cf83e4..bb2fbc519e5 100644
--- a/sys/arch/mips64/mips64/pmap.c
+++ b/sys/arch/mips64/mips64/pmap.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pmap.c,v 1.27 2007/05/03 19:34:00 miod Exp $ */
+/* $OpenBSD: pmap.c,v 1.28 2007/06/20 16:51:17 miod Exp $ */
/*
* Copyright (c) 2001-2004 Opsycon AB (www.opsycon.se / www.opsycon.com)
@@ -272,12 +272,16 @@ pmap_create()
{
pmap_t pmap;
vaddr_t va;
+ int s;
+
extern struct vmspace vmspace0;
extern struct user *proc0paddr;
DPRINTF(PDB_FOLLOW|PDB_CREATE, ("pmap_create()\n"));
+ s = splvm();
pmap = pool_get(&pmap_pmap_pool, PR_WAITOK);
+ splx(s);
bzero(pmap, sizeof(*pmap));
simple_lock_init(&pmap->pm_lock);
@@ -314,7 +318,7 @@ extern struct user *proc0paddr;
void
pmap_destroy(pmap_t pmap)
{
- int count;
+ int s, count;
DPRINTF(PDB_FOLLOW|PDB_CREATE, ("pmap_destroy(%x)\n", pmap));
@@ -354,7 +358,9 @@ pmap_destroy(pmap_t pmap)
#endif
}
+ s = splvm();
pool_put(&pmap_pmap_pool, pmap);
+ splx(s);
}
/*
@@ -429,10 +435,10 @@ pmap_remove(pmap_t pmap, vaddr_t sva, vaddr_t eva)
continue;
pmap->pm_stats.resident_count--;
pmap_remove_pv(pmap, sva, pfn_to_pad(entry));
+ pte->pt_entry = PG_NV | PG_G;
/*
* Flush the TLB for the given address.
*/
- pte->pt_entry = PG_NV | PG_G;
tlb_flush_addr(sva);
stat_count(remove_stats.flushes);
}
@@ -488,6 +494,7 @@ pmap_page_protect(struct vm_page *pg, vm_prot_t prot)
{
pv_entry_t pv;
vaddr_t va;
+ int s;
if (prot == VM_PROT_NONE) {
DPRINTF(PDB_REMOVE, ("pmap_page_protect(%p, %p)\n", pg, prot));
@@ -496,9 +503,6 @@ pmap_page_protect(struct vm_page *pg, vm_prot_t prot)
("pmap_page_protect(%p, %p)\n", pg, prot));
}
- if (pg == NULL)
- return;
-
switch (prot) {
case VM_PROT_READ|VM_PROT_WRITE:
case VM_PROT_ALL:
@@ -508,6 +512,7 @@ pmap_page_protect(struct vm_page *pg, vm_prot_t prot)
case VM_PROT_READ:
case VM_PROT_READ|VM_PROT_EXECUTE:
pv = pg_to_pvh(pg);
+ s = splvm();
/*
* Loop over all current mappings setting/clearing as apropos.
*/
@@ -518,15 +523,18 @@ pmap_page_protect(struct vm_page *pg, vm_prot_t prot)
prot);
}
}
+ splx(s);
break;
/* remove_all */
default:
pv = pg_to_pvh(pg);
+ s = splvm();
while (pv->pv_pmap != NULL) {
va = pv->pv_va;
pmap_remove(pv->pv_pmap, va, va + PAGE_SIZE);
}
+ splx(s);
}
}
@@ -545,9 +553,6 @@ pmap_protect(pmap_t pmap, vaddr_t sva, vaddr_t eva, vm_prot_t prot)
DPRINTF(PDB_FOLLOW|PDB_PROTECT,
("pmap_protect(%p, %p, %p, %p)\n", pmap, sva, eva, prot));
- if (pmap == NULL)
- return;
-
if ((prot & VM_PROT_READ) == VM_PROT_NONE) {
pmap_remove(pmap, sva, eva);
return;
@@ -987,10 +992,12 @@ pmap_clear_modify(struct vm_page *pg)
pt_entry_t *pte;
unsigned entry;
boolean_t rv = FALSE;
+ int s;
DPRINTF(PDB_FOLLOW, ("pmap_clear_modify(%p)\n", VM_PAGE_TO_PHYS(pg)));
pv = pg_to_pvh(pg);
+ s = splvm();
if (pg->pg_flags & PV_ATTR_MOD) {
atomic_clearbits_int(&pg->pg_flags, PV_ATTR_MOD);
rv = TRUE;
@@ -1023,6 +1030,7 @@ pmap_clear_modify(struct vm_page *pg)
}
}
}
+ splx(s);
return rv;
}
@@ -1099,14 +1107,14 @@ pmap_page_cache(vm_page_t pg, int mode)
pt_entry_t *pte;
u_int entry;
u_int newmode;
+ int s;
DPRINTF(PDB_FOLLOW|PDB_ENTER, ("pmap_page_uncache(%p)\n", pg));
newmode = mode & PV_UNCACHED ? PG_UNCACHED : PG_CACHED;
pv = pg_to_pvh(pg);
- atomic_clearbits_int(&pg->pg_flags, PV_CACHED | PV_UNCACHED);
- atomic_setbits_int(&pg->pg_flags, mode);
+ s = splvm();
for (; pv != NULL; pv = pv->pv_next) {
if (pv->pv_pmap == pmap_kernel()) {
pte = kvtopte(pv->pv_va);
@@ -1130,6 +1138,9 @@ pmap_page_cache(vm_page_t pg, int mode)
}
}
}
+ atomic_clearbits_int(&pg->pg_flags, PV_CACHED | PV_UNCACHED);
+ atomic_setbits_int(&pg->pg_flags, mode);
+ splx(s);
}
/*
@@ -1212,9 +1223,11 @@ int
pmap_enter_pv(pmap_t pmap, vaddr_t va, vm_page_t pg, u_int *npte)
{
pv_entry_t pv, npv;
+ int s;
pv = pg_to_pvh(pg);
+ s = splvm();
if (pv->pv_pmap == NULL) {
/*
* No entries yet, use header as the first entry
@@ -1277,8 +1290,10 @@ pmap_enter_pv(pmap_t pmap, vaddr_t va, vm_page_t pg, u_int *npte)
pmap, va, VM_PAGE_TO_PHYS(pg)));
npv = pmap_pv_alloc();
- if (npv == NULL)
+ if (npv == NULL) {
+ splx(s);
return ENOMEM;
+ }
npv->pv_va = va;
npv->pv_pmap = pmap;
npv->pv_next = pv->pv_next;
@@ -1288,6 +1303,7 @@ pmap_enter_pv(pmap_t pmap, vaddr_t va, vm_page_t pg, u_int *npte)
stat_count(enter_stats.secondpv);
}
+ splx(s);
return 0;
}
@@ -1299,6 +1315,7 @@ pmap_remove_pv(pmap_t pmap, vaddr_t va, paddr_t pa)
{
pv_entry_t pv, npv;
vm_page_t pg;
+ int s;
DPRINTF(PDB_FOLLOW|PDB_PVENTRY,
("pmap_remove_pv(%p, %p, %p)\n", pmap, va, pa));
@@ -1311,6 +1328,7 @@ pmap_remove_pv(pmap_t pmap, vaddr_t va, paddr_t pa)
return;
pv = pg_to_pvh(pg);
+ s = splvm();
/*
* If we are removing the first entry on the list, copy up
* the next entry, if any, and free that pv item since the
@@ -1326,7 +1344,7 @@ pmap_remove_pv(pmap_t pmap, vaddr_t va, paddr_t pa)
atomic_clearbits_int(&pg->pg_flags,
(PG_PMAP0 | PG_PMAP1 | PG_PMAP2 | PG_PMAP3) &
~PV_PRESERVE);
- Mips_SyncDCachePage(pv->pv_va);
+ Mips_SyncDCachePage(va);
}
stat_count(remove_stats.pvfirst);
} else {
@@ -1345,6 +1363,7 @@ pmap_remove_pv(pmap_t pmap, vaddr_t va, paddr_t pa)
#endif
}
}
+ splx(s);
}
/*==================================================================*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 12:41:35 +0000