Is there way to reserve more MMIO resource for PCIE-hotplug-capable slot?

[Zhao Forrest]

Hi,

Sometimes we could hotplug a PCIE device, which require more MMIO
resource than that reserved by BIOS.

My question is: is there a way for kernel to reserved more MMIO
resource for a PCIE-hotplug-capable slot? I searched the
kernel-parameters.txt, but didn't find any related information.

Thanks,
Forrest
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