[mdlug] Serializing ide controllers

[Stan Green]

I'm getting these errors like these in my system messages.

hdl: dma_intr: bad DMA status (dma_stat=75)
hdl: dma_intr: status=0x50 { DriveReady SeekComplete }
ide: failed opcode was: unknown

This is happening on more than one drive. (There are 11 drives in the system.)

A search of the internet turned up that trying serializing the ide controllers 
in the kernel parameters. The syntax suggested is:
ide0=serialize ide1=serialize ide2=serialize ide3=serialize ide4=serialize 
ide5=serialize

Given this, does this seem like a reasonable thing to do? If not, any other 
suggestions? Also what is the effect on performace by serializing?

Thanks,
Stan