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Remove a redundant check of the fault address.

This commit is contained in:
gwr 1997-01-25 21:51:11 +00:00
parent b805b73cbe
commit f8d1223fa5
1 changed files with 6 additions and 17 deletions
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23
sys/arch/sun3x/sun3x/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.2 1997/01/23 22:52:46 gwr Exp $ */
/* $NetBSD: trap.c,v 1.3 1997/01/25 21:51:11 gwr Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -460,24 +460,15 @@ trap(type, code, v, frame)
ftype = VM_PROT_READ;
va = trunc_page((vm_offset_t)v);
/* Need to resolve the fault. */
if (map == kernel_map) {
/* XXX: Do not allow faults outside the "managed" space. */
if (va < virtual_avail) {
if (p->p_addr->u_pcb.pcb_onfault) {
/* XXX - Can this happen? -gwr */
printf("trap: kernel_map & va < avail\n");
Debugger();
}
goto dopanic;
}
}
/*
* Need to resolve the fault.
*
* We give the pmap code a chance to resolve faults by
* reloading translations that it was forced to unload.
* This function does that, and calls vm_fault if it
* could not resolve the fault by reloading the MMU.
* This function may also, for example, disallow any
* faults in the kernel text segment, etc.
*/
rv = _pmap_fault(map, va, ftype);
@ -485,10 +476,8 @@ trap(type, code, v, frame)
if (rv && MDB_ISPID(p->p_pid)) {
printf("vm_fault(%x, %x, %x, 0) -> %x\n",
map, va, ftype, rv);
#ifdef DDB
if (mmudebug & MDB_WBFAILED)
Debugger();
#endif /* DDB */
}
#endif /* DEBUG */
@ -530,7 +519,7 @@ trap(type, code, v, frame)
ucode = v;
sig = SIGSEGV;
break;
} /* T_MMUFLT */
} /* T_MMUFLT */
} /* switch */
finish: