On 09/14/2012 04:03 PM, Konrad Rzeszutek Wilk wrote:
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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a DMI quirk for a PCIe switch? pci-quirk maybe? there is a hook
in per-device pci reset code path, which could be setup for such
a case.
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