Jeff Garzik wrote:

>TESTING:
>* Although most drivers by count received few operational changes, the
>common probe path was updated, so all drivers need fresh "yes, it sees
>all my disks" regression testing.
>
>* ahci and sata_sil24 were touched a lot, and so need additional
>testing.
>
>* sata_sil and ata_piix also need healthy re-testing of all basic
>functionality.
>
>
>  
>
I have been running a moderate write workload on this (built using 
linux-2.6.17-rc4 with your patch applied on top).  Last night, I ran on 
a set of clean AHCI based boxes (no bad drives) and got a serious of 
occasional spurious interrupts logged:


May 15 21:24:38 centera kernel: ReiserFS: sdd14: Using r5 hash to sort names
May 15 21:52:44 centera kernel: ata1: spurious interrupt (irq_stat 0x8 
active_tag -84148995 sactive 0x800)
May 15 22:00:02 centera run-crons[26837]: logrotate returned 1
May 15 22:16:00 centera kernel: ata1: spurious interrupt (irq_stat 0x8 
active_tag -84148995 sactive 0x4)
May 15 22:29:14 centera kernel: ata1: spurious interrupt (irq_stat 0x8 
active_tag -84148995 sactive 0x7e007fff)
May 15 22:35:04 centera kernel: ata3: spurious interrupt (irq_stat 0x8 
active_tag -84148995 sactive 0x4fffffff)

Full messages file and lspci below, but note that this hardware has been 
running ahci with this config in production for over a year now.

I have some bad disks that I will insert & try to get some testing on 
later today,

ric