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Add checks (make non DIAGNOSTIC) to make sure that we never call uvm_fault from an interrupt.

This commit is contained in:
chris 2001-06-26 22:09:19 +00:00
parent 25d9d85b42
commit e2d29421a9
1 changed files with 4 additions and 3 deletions
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7
sys/arch/arm32/arm32/fault.c
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@ -1,4 +1,4 @@
/* $NetBSD: fault.c,v 1.55 2001/06/19 13:42:13 wiz Exp $ */
/* $NetBSD: fault.c,v 1.56 2001/06/26 22:09:19 chris Exp $ */
/*
* Copyright (c) 1994-1997 Mark Brinicombe.
@ -405,7 +405,6 @@ copyfault:
pmap_handled_emulation(map->pmap, va))
goto out;
#ifdef DIAGNOSTIC
if (current_intr_depth > 0) {
#ifdef DDB
printf("Non-emulated page fault with intr_depth > 0\n");
@ -416,7 +415,6 @@ copyfault:
panic("Fault with intr_depth > 0");
#endif /* DDB */
}
#endif /* DIAGNOSTIC */
onfault = pcb->pcb_onfault;
pcb->pcb_onfault = NULL;
@ -620,6 +618,9 @@ cowfault(va)
if (va >= VM_MAXUSER_ADDRESS)
return (EFAULT);
/* uvm_fault can't be called from within an interrupt */
KASSERT(current_intr_depth == 0);
vm = curproc->p_vmspace;
error = uvm_fault(&vm->vm_map, va, 0, VM_PROT_READ | VM_PROT_WRITE);
return error;