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

Betty Dall
2013-05-29T16:17:01Z

On Wed, 2013-05-29 at 09:42 -0600, Pearson, Greg wrote:
> On 05/28/2013 12:48 PM, Betty Dall wrote:
> > 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.
> >
> > Signed-off-by: Betty Dall <betty.dall@hp.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..4a42afc 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 Decriptor Flags reset
>
> Nit Pick, change "Decriptor" to "Descriptor".
>
> --
> Greg

I will fix that. Thanks.

-Betty
> > + * 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);
> > +
> > +
> > aer_recover_queue(pcie_err->device_id.segment,
> > pcie_err->device_id.bus,
> > devfn, aer_severity);
> > --
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> >
> >