linux-kernel - Re: [PATCH 0/3] Fix two PEIe hotplug issues

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Message-ID: <4716CE79.7040201@rtr.ca>
Date:	Wed, 17 Oct 2007 23:09:45 -0400
From:	Mark Lord <lkml@....ca>
To:	kristen.c.accardi@...el.com
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Theodore Ts'o <tytso@....edu>, greg@...ah.com,
	pcihpd-discuss@...ts.sourceforge.net
Subject: Re: [PATCH 0/3] Fix two PEIe hotplug issues

Mark Lord wrote:
> Fix PCIe Hotplug so that it works with ExpressCard slots on Dell notebooks
> (and others?) in conjunction with the modparam of pciehp_force=1.

To make things simpler for distro people, I'm contemplating another patch
in this series, to allow something like:  pciehp_force=2

This would then *try* the ACPI BIOS calls, and only fall back to pcie_force=1
if the BIOS support fails.  This would be an ideal default for most desktop/notebook
distros to consider using.

Without this, they don't have any good choice:  use the defaults, and things fail
on the most popular brand of machines in the marketplace.  Use pciehp_force=1,
and they may break (?) on other brands.

So a hybrid of the two seems best.  Pity it couldn't be the default behaviour, though.
Or could it?  We're early enough in the 2.6.24 cycle for it..

Opinions?
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