linux-kernel - Re: Is there way to reserve more MMIO resource for PCIE-hotplug-capable slot?

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Message-ID: <457605A5.1060401@zytor.com>
Date:	Tue, 05 Dec 2006 15:49:57 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Zhao Forrest <forrest.zhao@...il.com>
CC:	dely.l.sy@...el.com, greg@...ah.com, linux-kernel@...r.kernel.org
Subject: Re: Is there way to reserve more MMIO resource for PCIE-hotplug-capable
 slot?

Zhao Forrest wrote:
> 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.
> 

If you need 32-bit MMIO, no, because it requires chipset-specific 
reprogramming.  64-bit MMIO should be readily available.

	-hpa
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