From: jfaslist <jfaslist@yahoo.fr>
To: linuxppc64-dev@ozlabs.org
Subject: Maple: killing a process that causes a machine check exception
Date: Tue, 23 May 2006 16:59:35 +0200 [thread overview]
Message-ID: <44732357.4000506@yahoo.fr> (raw)
Hi,
By applying the following mods (plse see below), i was able to have a
user process that caused a machine check exception to be terminated (on
a Maple platform), as expected. I was wondering why the PPC64 had a
different ME handling than PPC which does send the SIGBUS to the process?
Thanks
Regards,
-jean-francois simon
diff -urN -X linux-2.6.16.14/Documentation/dontdiff
linux-2.6.16.14/arch/powerpc/kernel/traps.c
linux-2.6.16.14.vmeberr_fix/arch/powerpc/kernel/traps.c
--- linux-2.6.16.14/arch/powerpc/kernel/traps.c 2006-05-04
17:03:45.000000000 -0700
+++ linux-2.6.16.14.vmeberr_fix/arch/powerpc/kernel/traps.c 2006-05-09
02:46:59.000000000 -0700
@@ -340,12 +340,19 @@
#ifdef CONFIG_PPC64
int recover = 0;
+
/* See if any machine dependent calls */
if (ppc_md.machine_check_exception)
recover = ppc_md.machine_check_exception(regs);
if (recover)
return;
+
+ if (user_mode(regs)) {
+ regs->msr |= MSR_RI;
+ _exception(SIGBUS, regs, BUS_ADRERR, regs->nip);
+ return;
+ }
#else
unsigned long reason = get_mc_reason(regs);
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next reply other threads:[~2006-05-23 14:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-23 14:59 jfaslist [this message]
2006-05-23 15:15 ` Maple: killing a process that causes a machine check exception Anton Blanchard
2006-05-23 16:09 ` jfaslist
2006-05-23 16:23 ` Anton Blanchard
2006-05-23 16:30 ` jfaslist
2006-05-23 16:48 ` Linas Vepstas
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