From: Borislav Petkov <bp@alien8.de>
To: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
"Luck, Tony" <tony.luck@intel.com>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"rostedt@goodmis.org" <rostedt@goodmis.org>,
"rjw@sisk.pl" <rjw@sisk.pl>,
"lance.ortiz@hp.com" <lance.ortiz@hp.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Aristeu Rozanski Filho <arozansk@redhat.com>
Subject: Re: [PATCH 3/3] mce: acpi/apei: trace: Enable ghes memory error trace event
Date: Thu, 15 Aug 2013 15:51:06 +0200 [thread overview]
Message-ID: <20130815135106.GG27616@pd.tnic> (raw)
In-Reply-To: <20130815103421.178a5224@samsung.com>
On Thu, Aug 15, 2013 at 10:34:21AM -0300, Mauro Carvalho Chehab wrote:
> Yes, but the thing is that it is not safe to use the hardware driver
> if the BIOS is also reading the hardware error registers directly, as,
> on several hardware, a read cause the error data to be cleaned on such
> register.
Here's the deal:
* We parse some APEI table and disable those MCA banks which the BIOS
wants to handle first.
* When the BIOS decides to report an error from that handling, it does
so over another BIOS table.
* Now you have two possibilities:
** On systems without an edac driver or where it doesn't make sense to
have the ghes_edac driver, we call trace_mc_event() straight from APEI
code (this is what we're currently discussung).
** On other systems, where we need ghes_edac, we *don't* use the
trace_mc_event() tracepoint in the APEI code but let it come from
ghes_edac with additional information collected by edac.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
next prev parent reply other threads:[~2013-08-15 13:51 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-08 18:27 [PATCH 0/3] Add trace event for ghes memory error Naveen N. Rao
2013-08-08 18:27 ` [PATCH 1/3] mce: acpi/apei: trace: Include PCIe AER trace event conditionally Naveen N. Rao
2013-08-08 19:23 ` Steven Rostedt
2013-08-12 11:37 ` Naveen N. Rao
2013-08-12 13:13 ` Steven Rostedt
2013-08-12 13:26 ` Borislav Petkov
2013-08-08 18:27 ` [PATCH 2/3] mce: acpi/apei: trace: Add trace event for ghes memory error Naveen N. Rao
2013-08-08 19:17 ` Borislav Petkov
2013-08-12 11:28 ` Naveen N. Rao
2013-08-08 18:27 ` [PATCH 3/3] mce: acpi/apei: trace: Enable ghes memory error trace event Naveen N. Rao
2013-08-08 19:38 ` Mauro Carvalho Chehab
2013-08-10 18:03 ` Borislav Petkov
2013-08-12 11:33 ` Mauro Carvalho Chehab
2013-08-12 12:38 ` Borislav Petkov
2013-08-12 14:49 ` Mauro Carvalho Chehab
2013-08-12 15:04 ` Borislav Petkov
2013-08-12 17:25 ` Mauro Carvalho Chehab
2013-08-12 17:54 ` Luck, Tony
2013-08-12 17:56 ` Borislav Petkov
2013-08-13 11:36 ` Naveen N. Rao
2013-08-13 12:21 ` Mauro Carvalho Chehab
2013-08-13 12:33 ` Borislav Petkov
2013-08-13 16:55 ` Naveen N. Rao
2013-08-14 23:54 ` Mauro Carvalho Chehab
2013-08-12 12:41 ` Naveen N. Rao
2013-08-12 12:53 ` Borislav Petkov
2013-08-13 11:21 ` Naveen N. Rao
2013-08-13 12:42 ` Borislav Petkov
2013-08-13 17:32 ` Naveen N. Rao
2013-08-13 17:58 ` Borislav Petkov
2013-08-13 18:05 ` Luck, Tony
2013-08-13 18:05 ` Luck, Tony
2013-08-13 18:05 ` Luck, Tony
2013-08-13 18:10 ` Borislav Petkov
2013-08-13 20:13 ` Luck, Tony
2013-08-13 20:13 ` Luck, Tony
2013-08-13 20:13 ` Luck, Tony
2013-08-14 5:43 ` Borislav Petkov
2013-08-14 18:38 ` Luck, Tony
2013-08-14 18:38 ` Luck, Tony
2013-08-14 18:38 ` Luck, Tony
2013-08-15 10:14 ` Borislav Petkov
2013-08-15 19:14 ` Luck, Tony
2013-08-15 19:14 ` Luck, Tony
2013-08-15 19:14 ` Luck, Tony
2013-08-15 19:43 ` Borislav Petkov
2013-08-15 0:05 ` Mauro Carvalho Chehab
2013-08-14 10:57 ` Naveen N. Rao
2013-08-15 0:22 ` Mauro Carvalho Chehab
2013-08-15 9:38 ` Borislav Petkov
2013-08-15 13:26 ` Mauro Carvalho Chehab
2013-08-15 13:44 ` Borislav Petkov
2013-08-15 14:14 ` Mauro Carvalho Chehab
2013-08-15 16:11 ` Borislav Petkov
2013-08-15 19:20 ` Luck, Tony
2013-08-15 19:41 ` Borislav Petkov
2013-08-15 0:00 ` Mauro Carvalho Chehab
2013-08-15 9:43 ` Borislav Petkov
2013-08-12 14:44 ` Mauro Carvalho Chehab
2013-08-13 11:41 ` Naveen N. Rao
2013-08-13 12:41 ` Mauro Carvalho Chehab
2013-08-13 17:17 ` Naveen N. Rao
2013-08-13 17:39 ` Luck, Tony
2013-08-14 10:47 ` Naveen N. Rao
2013-08-14 12:18 ` Borislav Petkov
2013-08-15 0:15 ` Mauro Carvalho Chehab
2013-08-15 10:01 ` Borislav Petkov
2013-08-15 13:34 ` Mauro Carvalho Chehab
2013-08-15 13:51 ` Borislav Petkov [this message]
2013-08-15 18:16 ` Luck, Tony
2013-08-15 18:16 ` Luck, Tony
2013-08-15 18:16 ` Luck, Tony
2013-08-15 18:41 ` Borislav Petkov
2013-08-14 23:56 ` Mauro Carvalho Chehab
2013-08-15 10:02 ` Borislav Petkov
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