From: "Luck, Tony" <tony.luck@intel.com>
To: linux-ia64@vger.kernel.org
Subject: RE: [RFC] Better MCA recovery on IPF
Date: Thu, 06 Nov 2003 19:09:37 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106814589713942@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-106724227826901@msgid-missing>
> By the way, what do you mean by "less scope to avoid the
> MCA"? this statement seems to imply that some existing implementations do it
> (avoid generating and MCA when a ld.s accesses poisoned data) under some
> circumstances. Can you elaborate?
I was just being vague. In the case of "ld.s" the data is
targetted at a register ... and we don't have a way to indicate
that the contents of a register are poisoned (NaT would at least
stop someone consuming the poisoned data, but they wouldn't know
why) ... so an MCA is inevitable. In the "lfetch" case we only
requested that the data be pulled into cache, which can keep track
of whether it is poisoned or not ... so it is architecturally possible
to avoid the MCA.
I don't have the details to hand on how existing implementations
actually handle this.
-Tony
next prev parent reply other threads:[~2003-11-06 19:09 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-27 8:07 [RFC] Better MCA recovery on IPF Hidetoshi Seto
2003-10-27 16:58 ` Matthias Fouquet-Lapar
2003-10-31 5:09 ` Hidetoshi Seto
2003-10-31 17:14 ` Grant Grundler
2003-11-01 6:39 ` Matthias Fouquet-Lapar
2003-11-01 8:38 ` Keith Owens
2003-11-02 13:33 ` Matthias Fouquet-Lapar
2003-11-03 17:09 ` Russ Anderson
2003-11-03 17:37 ` Matthias Fouquet-Lapar
2003-11-03 17:51 ` Alberto Munoz
2003-11-03 17:53 ` Alberto Munoz
2003-11-03 18:23 ` Jack Steiner
2003-11-03 18:42 ` Alberto Munoz
2003-11-03 19:28 ` Jack Steiner
2003-11-03 23:09 ` Alberto Munoz
2003-11-05 4:11 ` Greg Banks
2003-11-05 17:00 ` Luck, Tony
2003-11-05 17:14 ` Alberto Munoz
2003-11-05 17:30 ` Matthew Wilcox
2003-11-05 17:37 ` Alberto Munoz
2003-11-06 12:03 ` Hidetoshi Seto
2003-11-06 14:23 ` Matthias Fouquet-Lapar
2003-11-06 19:09 ` Luck, Tony [this message]
2003-11-07 9:58 ` Hidetoshi Seto
2003-11-07 10:52 ` Matthias Fouquet-Lapar
2003-11-08 1:15 ` Luck, Tony
2003-11-08 7:36 ` Matthias Fouquet-Lapar
2003-11-10 10:33 ` Hidetoshi Seto
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