Re: [XenPPC] Help with JS21 disk solution

[Segher Boessenkool <segher@xxxxxxxxxxxxxxxxxxx>]

> > > If you need inv_all here, you have a bug elsewhere...
> > I agree, I'm just trying to corner the beast :)
> Ok, this seems to work, its pretty solid, so somehow our  
> invalidation logic is sufficient for network but not disk  
> activity.  One theory is that disk uses short lived TCE entries and  
> not batching as network does.
> So we have a workaround and later we can investigate the single  
> entry issue.
Do you map the DART table as M=1 or M=0?  U3 should use M=0
(and needs logic to flush the data to main memory), while U4
should use M=1...


Segher


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