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Add diagnostic to skip calling uvm_fault when the lwp's USERSR is unset.

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This commit is contained in:
matt 2004-03-25 18:50:50 +00:00
parent 040b0bc071
commit 06bf53b3d7
1 changed files with 11 additions and 2 deletions
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13
sys/arch/powerpc/powerpc/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.98 2004/03/14 01:08:48 cl Exp $ */ /* $NetBSD: trap.c,v 1.99 2004/03/25 18:50:50 matt Exp $ */
/* /*
* Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -32,7 +32,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.98 2004/03/14 01:08:48 cl Exp $"); __KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.99 2004/03/25 18:50:50 matt Exp $");
#include "opt_altivec.h" #include "opt_altivec.h"
#include "opt_ddb.h" #include "opt_ddb.h"
@ -154,6 +154,15 @@ trap(struct trapframe *frame)
l->l_savp->savp_faultaddr = va; l->l_savp->savp_faultaddr = va;
l->l_flag |= L_SA_PAGEFAULT; l->l_flag |= L_SA_PAGEFAULT;
} }
#if defined(DIAGNOSTIC) && defined(PPC_OEA)
} else if ((va >> ADDR_SR_SHFT) == USER_SR) {
printf("trap: kernel %s DSI trap @ %#lx by %#lx"
" (DSISR %#x): USER_SR unset\n",
(frame->dsisr & DSISR_STORE)
? "write" : "read",
va, frame->srr0, frame->dsisr);
goto brain_damage2;
#endif
} else { } else {
map = kernel_map; map = kernel_map;
} }