[RFC][PATCH] Reset PCIe devices to address DMA problem on kdump with iommu

Konrad Rzeszutek Wilk konrad at kernel.org
Fri Sep 14 16:03:36 EDT 2012

> As to the boot parameter to enable this function, you suggested using
> reset_devices. I found that on a certain platform resetting devices
> caused PCIe error due to a hardware bug. Therefore I think we need
> new parameter apart from reset_devices to disable this function on
> such a machine.

Wouldn't a DMI quirk be better for this? That way the second kernel
internally would know not to do this.

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