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Re: [patch][Intel-IOMMU] Fix for IOMMU early crash

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From: Paul Mackerras
Subject: Re: [patch][Intel-IOMMU] Fix for IOMMU early crash
Date: Tuesday, September 11, 2007 - 12:48 pm

Keshavamurthy, Anil S writes:


At the moment this will cause ppc64 to crash, since we rely on
pci_dev->sysdata pointing to some node in the firmware device tree,
either the device's node or the node for a parent bus.

We could change the ppc64 code to use pci_dev->bus->sysdata in the
case when pci_dev->sysdata is NULL, which would fix the problem.  I
think that change should be incorporated as part of this patch so that
we don't break git bisection.

In other words I don't want to see this patch applied as it stands.

Paul.
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Messages in current thread:
[RFC][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Sat Sep 8, 1:05 pm)
Re: [RFC][Intel-IOMMU] Fix for IOMMU early crash, Muli Ben-Yehuda, (Sun Sep 9, 4:16 am)
Re: [RFC][Intel-IOMMU] Fix for IOMMU early crash, Paul Mackerras, (Sun Sep 9, 10:37 am)
Re: [RFC][Intel-IOMMU] Fix for IOMMU early crash, Muli Ben-Yehuda, (Sun Sep 9, 10:51 am)
Re: [RFC][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Mon Sep 10, 8:43 am)
Re: [RFC][Intel-IOMMU] Fix for IOMMU early crash, Muli Ben-Yehuda, (Mon Sep 10, 1:25 pm)
Re: [RFC][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Tue Sep 11, 10:22 am)
Re: [RFC][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Tue Sep 11, 10:42 am)
Re: [patch][Intel-IOMMU] Fix for IOMMU early crash, Paul Mackerras, (Tue Sep 11, 12:48 pm)
Re: [RFC][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Tue Sep 11, 1:43 pm)
[BUG:] forcedeth: MCP55 not allowing DHCP, Casey Dahlin, (Tue Sep 11, 3:05 pm)
[patch][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Wed Sep 12, 12:28 pm)
Re: [patch][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Wed Sep 12, 2:55 pm)
Re: [patch][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Wed Sep 12, 6:29 pm)
Re: [patch][Intel-IOMMU] Fix for IOMMU early crash, Paul Mackerras, (Fri Sep 14, 9:30 am)
Re: [BUG:] forcedeth: MCP55 not allowing DHCP, Casey Dahlin, (Mon Sep 17, 6:59 pm)
Re: [patch][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Tue Sep 25, 10:07 am)
[patch take 2][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Wed Oct 3, 2:13 pm)
Re: [patch take 2][Intel-IOMMU] Fix for IOMMU early crash, Benjamin Herrenschmidt, (Wed Oct 3, 6:19 pm)
Re: [patch take 2][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Wed Oct 3, 6:36 pm)
Re: [patch take 2][Intel-IOMMU] Fix for IOMMU early crash, Benjamin Herrenschmidt, (Wed Oct 3, 8:39 pm)
Re: [patch take 2][Intel-IOMMU] Fix for IOMMU early crash, Keshavamurthy, Anil S, (Thu Oct 4, 12:20 pm)
Re: [patch take 2][Intel-IOMMU] Fix for IOMMU early crash, Benjamin Herrenschmidt, (Thu Oct 4, 8:08 pm)