Re: [Xen-ia64-devel] [PATCH][RFC][TAKE4] the P2M/VP patches

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

Thank you for testing.

On Mon, Apr 10, 2006 at 03:52:52PM +0100, Tristan Gingold wrote:
> Le Vendredi 07 Avril 2006 06:16, Isaku Yamahata a écrit :
> > Hello.
> > I attached the P2M/VP model patches take 4 for the change set
> > 9492:2133fb78dba3cf6b6b88d1566fc5cc9de3039f43.
> > Please comments/request/review.
> I am testing this on my FAME-C.
> Currently it doesn't work: this is an infinite loop in an mpt driver.
> I will check how it does handle DMA.

It seems wrong dma address is used.
My test environment is Tiger-2. Mpt driver is used.
I encountered similar case before, but I don't remember clearly.


> BTW, I got message about bad mp address (on FAME and on Tiger-2).
> Did you encounter them ?

Is its address in I/O area?
Some device drivers access I/O port to check its existance.
(VGA, ATA, serial...) It might cause bad mpa.
Stack trace will be printed. You get Linux address 0xa00...,
then you can determine which device driver caused it.
-- 
yamahata

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