linux-kernel - Re: [PATCH 2/2] fusion: Implement generic interrupt misroute handling

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Message-Id: <1217954187.9923.15.camel@localhost.localdomain>
Date:	Tue, 05 Aug 2008 09:36:27 -0700
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	David Vrabel <david.vrabel@....com>
Cc:	"Moore, Eric" <Eric.Moore@....com>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"Prakash, Sathya" <Sathya.Prakash@....com>
Subject: Re: [PATCH 2/2] fusion:  Implement generic interrupt misroute
	handling

On Mon, 2008-08-04 at 14:55 +0100, David Vrabel wrote:
> Moore, Eric wrote:
> > Thanks, I will try this out.   However I thought I saw lost
> > interrupts occurring randomly, meaning it was not necessarily the
> > first config page access.  I'm back in the office on 8/11, I will
> > test it out then and provide feedback.
> 
> Is this using MSI on a device without per-vector mask bits?  If so, then
> this patch may help.
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce6fce4295ba727b36fdc73040e444bd1aae64cd

We don't really know what the problem is.  MSI interrupts get lost on
older motherboards (the ones most likely to contain a 1030).  Why is
anybody's guess although the clever money is on the motherboard bridge
having issues.

James


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