diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2006-06-19 20:23:54 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2006-06-19 20:23:54 +0000 |
| commit | 8e4e0d00306b9b02302711a0e35d18baa2e744d7 (patch) | |
| tree | c718777d4b28fd776cf317832fe042ff7cfb490c /sys | |
| parent | 4b8bc04e3636c3d32633962d94c8cd746569ad66 (diff) | |
Reset pcb_onfault around uvm_fault() calls.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/alpha/alpha/trap.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/sys/arch/alpha/alpha/trap.c b/sys/arch/alpha/alpha/trap.c index 1b867f144a0..9a7c1bcb91e 100644 --- a/sys/arch/alpha/alpha/trap.c +++ b/sys/arch/alpha/alpha/trap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: trap.c,v 1.50 2006/03/19 22:00:29 miod Exp $ */ +/* $OpenBSD: trap.c,v 1.51 2006/06/19 20:23:53 miod Exp $ */ /* $NetBSD: trap.c,v 1.52 2000/05/24 16:48:33 thorpej Exp $ */ /*- @@ -289,8 +289,8 @@ trap(a0, a1, a2, entry, framep) const unsigned long a0, a1, a2, entry; struct trapframe *framep; { - register struct proc *p; - register int i; + struct proc *p; + int i; u_int64_t ucode; u_quad_t sticks; int user; @@ -301,6 +301,7 @@ trap(a0, a1, a2, entry, framep) int typ; union sigval sv; vm_prot_t ftype; + unsigned long onfault; uvmexp.traps++; p = curproc; @@ -473,15 +474,22 @@ do_fault: * argument space is lazy-allocated. */ if (!user && (a0 >= VM_MIN_KERNEL_ADDRESS || - p == NULL || p->p_addr->u_pcb.pcb_onfault == 0)) + p == NULL || p->p_addr->u_pcb.pcb_onfault == 0)) { + vm = NULL; map = kernel_map; - else { + } else { vm = p->p_vmspace; map = &vm->vm_map; } va = trunc_page((vaddr_t)a0); + if (p != NULL) { + onfault = p->p_addr->u_pcb.pcb_onfault; + p->p_addr->u_pcb.pcb_onfault = 0; + } rv = uvm_fault(map, va, 0, ftype); + if (p != NULL) + p->p_addr->u_pcb.pcb_onfault = onfault; /* * If this was a stack access we keep track of the * maximum accessed stack size. Also, if vm_fault |