linux-kernel - Re: "ide=reverse" do we still need this?

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Message-ID: <20080213044436.GB10101@kroah.com>
Date:	Tue, 12 Feb 2008 20:44:36 -0800
From:	Greg KH <greg@...ah.com>
To:	Rene Herman <rene.herman@...access.nl>
Cc:	bzolnier@...il.com, muli@...ibm.com, jdmason@...zu.us,
	linux-ide@...r.kernel.org, linux-pci@...ey.karlin.mff.cuni.cz,
	linux-kernel@...r.kernel.org, discuss@...-64.org
Subject: Re: "ide=reverse" do we still need this?

On Wed, Feb 13, 2008 at 02:41:07AM +0100, Rene Herman wrote:
> On 13-02-08 01:15, Greg KH wrote:
>
>> I'm reworking the pci device list logic (we currently keep all PCI
>> devices in 2 lists, which isn't the nicest, we should be able to get
>> away with only 1 list.)
>> The only bother I've found so far is the pci_get_device_reverse()
>> function, it's used in 2 places, IDE and the calgary driver.
>> I'm curious if we really still support the ide=reverse option?  It's a
>> config option that I don't think the distros still enable (SuSE does
>> not).  Is this still needed these days?
>> In digging, we changed this option in 2.2.x from being called
>> "pci=reverse" and no one else seems to miss it.
>> Any thoughts?
>
> While details escape me somewhat again at the monment, a few months ago I 
> was playing around with a PCI Promise IDE controller and needed ide=reverse 
> to save me from having to switch disks around to still have a bootable 
> system.
>
> Or some such. Not too clear anymore, but I remember it saved the day.

You couldn't just change the boot disk in grub?

Or use an initramfs and /dev/disk/by-id/ to keep any future moves
stable?

thanks,

greg k-h
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