Thread (7 messages) 7 messages, 3 authors, 2013-05-21

RE: [PATCH 2/2 V8] powerpc/85xx: Add machine check handler to fix PCIe erratum on mpc85xx

From: Jia Hongtao-B38951 <hidden>
Date: 2013-05-10 04:00:54

quoted
-----Original Message-----
From: Wood Scott-B07421
Sent: Friday, May 03, 2013 1:04 AM
To: Jia Hongtao-B38951
Cc: linuxppc-dev@lists.ozlabs.org; galak@kernel.crashing.org; Wood
Scott- B07421; segher@kernel.crashing.org; Li Yang-R58472; Jia
Hongtao-B38951
Subject: Re: [PATCH 2/2 V8] powerpc/85xx: Add machine check handler to
fix PCIe erratum on mpc85xx

On 04/28/2013 12:20:08 AM, Jia Hongtao wrote:
quoted
A PCIe erratum of mpc85xx may causes a core hang when a link of PCIe
goes down. when the link goes down, Non-posted transactions issued
via the ATMU requiring completion result in an instruction stall.
At the same time a machine-check exception is generated to the core
to allow further processing by the handler. We implements the
handler which skips the instruction caused the stall.

This patch depends on patch:
powerpc/85xx: Add platform_device declaration to fsl_pci.h

Signed-off-by: Zhao Chenhui <redacted>
Signed-off-by: Li Yang <redacted>
Signed-off-by: Liu Shuo <redacted>
Signed-off-by: Jia Hongtao <redacted>
---
V8:
* Add A variant load instruction emulation.
ACK

-Scott
=20
Thanks for the review.
=20
Hi Kumar,
=20
Could you please review these MSI and PCI hang errata patches?
http://patchwork.ozlabs.org/patch/233211/
http://patchwork.ozlabs.org/patch/235276/
http://patchwork.ozlabs.org/patch/240238/
http://patchwork.ozlabs.org/patch/240239/ (This patch)
=20
Thanks.
-Hongtao
Hi Kumar,

I'm really appreciated if you have time to review these patches?

Thanks.
-Hongtao
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