[PATCH] intel-iommu: Synchronize gcmd value with global command register

[David Woodhouse]

On Thu, 2013-04-04 at 14:48 +0900, Takao Indoh wrote:
> 
> - DMAR fault messages floods and second kernel does not boot. Recently I
>   saw similar report. https://lkml.org/lkml/2013/3/8/120

Right. So the fix for that is to make the subsequent errors silent,
until/unless we actually get a request to create a mapping for the given
device.

> - igb driver detectes error on linkup and kdump via network fails.

That's a driver bug, IIRC. It was failing to completely reset the
hardware. It's fixed now, isn't it?

> - On a certain platform, though kdump itself works, PCIe error like
>   Unexpected Completion is detected and it gets hardware degraded.

More information required.

-- 
dwmw2
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