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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Gavin Shan <shangw@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 1/6] powerpc/eeh: Don't collect PCI-CFG data on PHB
Date: Wed, 26 Jun 2013 09:57:26 +1000	[thread overview]
Message-ID: <1372204646.3944.223.camel@pasglop> (raw)
In-Reply-To: <20130625234917.GA4556@shangw.(null)>

On Wed, 2013-06-26 at 07:49 +0800, Gavin Shan wrote:
> It's something like the followings. For ER on PE#0, we will have
> PE with type of EEH_PE_BUS marked as isolated, instead of the
> one with EEH_PE_PHB.
> 
> 
>         [ EEH_PE_PHB] <---> [ EEH_PE_PHB] <---> [ EEH_PE_PHB]
>                                   |
>                             [ EEH_PE_BUS ] PE#0
>                                   |

So we actually have two PEs here ? One real (PE#0) and one imaginary
(PHB PE) with no PE# associated ?

>                         -------------------------
>                         |                       |
>                    [ EEH_PE_BUS ] PE#1     [ EEH_PE_BUS] PE#2
> 
> >I would either not bother and collect the FF's, or make this specific
> >to fence and only fence.
> >
> 
> I'd like to keep it specific to fenced PHB and it's already be
> that :-)

Cheers,
Ben.

  reply	other threads:[~2013-06-25 23:57 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-25 10:00 [PATCH v2 00/6] Follow-up fixes for EEH on PowerNV Gavin Shan
2013-06-25 10:00 ` [PATCH 1/6] powerpc/eeh: Don't collect PCI-CFG data on PHB Gavin Shan
2013-06-25 11:55   ` Benjamin Herrenschmidt
2013-06-25 23:49     ` Gavin Shan
2013-06-25 23:57       ` Benjamin Herrenschmidt [this message]
2013-06-26  0:12         ` Gavin Shan
2013-06-25 11:56   ` Benjamin Herrenschmidt
2013-06-25 23:50     ` Gavin Shan
2013-06-25 10:00 ` [PATCH 2/6] powerpc/eeh: Check PCIe link after reset Gavin Shan
2013-06-25 11:58   ` Benjamin Herrenschmidt
2013-06-25 23:54     ` Gavin Shan
2013-06-25 10:00 ` [PATCH 3/6] powerpc/powernv: Replace variables with flags Gavin Shan
2013-06-25 10:00 ` [PATCH 4/6] powerpc/eeh: Fix address catch for PowerNV Gavin Shan
2013-06-25 10:01 ` [PATCH 5/6] powerpc/eeh: Refactor the output message Gavin Shan
2013-06-25 10:01 ` [PATCH 6/6] powerpc/eeh: Avoid build warnings Gavin Shan
  -- strict thread matches above, loose matches on Subject: below --
2013-06-26  1:38 [PATCH v3 00/6] Follow-up fixes for EEH on PowerNV Gavin Shan
2013-06-26  1:38 ` [PATCH 1/6] powerpc/eeh: Don't collect PCI-CFG data on PHB Gavin Shan

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