linux-kernel - Re: [PATCH v2 2/3] ACPI/APEI: Force fatal AER severity when bus has been reset

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Date:	Tue, 04 Jun 2013 10:20:54 -0600
From:	Betty Dall <betty.dall@...com>
To:	Chen Gong <gong.chen@...ux.intel.com>
Cc:	rjw@...k.pl, bhelgaas@...gle.com, ying.huang@...el.com,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH v2 2/3] ACPI/APEI: Force fatal AER severity when bus has
 been reset

On Tue, 2013-06-04 at 03:53 -0400, Chen Gong wrote:
> On Thu, May 30, 2013 at 08:39:28AM -0600, Betty Dall wrote:
> > Date:	Thu, 30 May 2013 08:39:28 -0600
> > From: Betty Dall <betty.dall@...com>
> > To: rjw@...k.pl, bhelgaas@...gle.com
> > Cc: ying.huang@...el.com, linux-acpi@...r.kernel.org,
> >  linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, Betty Dall
> >  <betty.dall@...com>
> > Subject: [PATCH v2 2/3] ACPI/APEI: Force fatal AER severity when bus has
> >  been reset
> > X-Mailer: git-send-email 1.7.7.6
> > 
> > The CPER error record has a reset bit that indicates that the platform
> > has reset the bus. The reset bit can be set for any severity error
> > including recoverable.  From the AER code path's perspective,
> > any error is fatal if the bus has been reset. This patch upgrades the
> > severity of the AER recovery to AER_FATAL whenever the CPER error record
> > indicates that the bus has been reset.
> > 
> > Changes since v1:
> > Fixed a typo in comment.
> > 
> > Signed-off-by: Betty Dall <betty.dall@...com>
> > ---
> > 
> >  drivers/acpi/apei/ghes.c |   21 ++++++++++++++++++++-
> >  1 files changed, 20 insertions(+), 1 deletions(-)
> > 
> > 
> > diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> > index d668a8a..1c67d5a 100644
> > --- a/drivers/acpi/apei/ghes.c
> > +++ b/drivers/acpi/apei/ghes.c
> > @@ -451,7 +451,26 @@ static void ghes_do_proc(struct ghes *ghes,
> >  				int aer_severity;
> >  				devfn = PCI_DEVFN(pcie_err->device_id.device,
> >  						  pcie_err->device_id.function);
> > -				aer_severity = cper_severity_to_aer(sev);
> > +				/*
> > +				 * Some Firmware First implementations
> > +				 * put the device in SBR to contain
> > +				 * the error. This is indicated by the
> > +				 * CPER Section Descriptor Flags reset
> > +				 * bit which means the component must
> > +				 * be re-initialized or re-enabled
> > +				 * prior to use. Promoting the AER
> > +				 * serverity to FATAL will cause the
> > +				 * AER code to link_reset and allow
> > +				 * drivers to reprogram their cards.
> > +				 */
> > +				if (gdata->flags & CPER_SEC_RESET)
> > +					aer_severity = cper_severity_to_aer(
> > +							CPER_SEV_FATAL);
> > +				else
> > +					aer_severity =
> > +						cper_severity_to_aer(sev);
> > +
> > +
> 
> How about this?
>                                 if (gdata->flags & CPER_SEC_RESET)
>                                         sev = CPER_SEV_FATAL;
>                                 cper_severity_to_aer(sev);

Thanks for the review. I will make that change.

-Betty
> 
> >  				aer_recover_queue(pcie_err->device_id.segment,
> >  						  pcie_err->device_id.bus,
> >  						  devfn, aer_severity);
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
> > the body of a message to majordomo@...r.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html


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