Re: Areca RAID driver remaining items?

From: Christoph Hellwig <hch@infradead.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: erich <erich@areca.com.tw>,
	Arjan van de Ven <arjan@infradead.org>,
	Christoph Hellwig <hch@infradead.org>,
	linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
	billion.wu@areca.com.tw, akpm@osdl.org, oliver@neukum.org
Subject: Re: Areca RAID driver remaining items?
Date: Fri, 24 Feb 2006 16:56:47 +0000	[thread overview]
Message-ID: <20060224165647.GA4176@infradead.org> (raw)
In-Reply-To: <1140695990.19361.8.camel@localhost.localdomain>

On Thu, Feb 23, 2006 at 11:59:50AM +0000, Alan Cox wrote:
> On Iau, 2006-02-23 at 17:50 +0800, erich wrote:
> > But unfortunately I found some mainboards will hang up if I always enable 
> > this function in my lab.
> > To avoid this issue, I do an option for this case.
> > 
> > But  Christoph Hellwig give me comment with it.
> 
> 
> Another thing you can also do for many of these cases is to use either
> the PCI or DMI interfaces to identify the problem board and
> automatically set the option as well.
> 
> There are two ways to do this. One is 

Please avoid that unless really nessecary.  I doubt there's boards where
MSI would only be broken with the areca card but not with other MSI-capable
ones.  If a board or chipset is generally broken vs MSI it should be
added to the global MSI blacklist.  It's probably be nice to have a global
nomsi boot option instead of one in every driver aswell..