On 04/22/2010 09:14 PM, Tirumala Reddy Marri wrote:
quoted text
> 
> Is there a reason for hard coding 0x11d as polynomial ? The problem I
> ran into was when  I was trying disk fail test there was issue in
> recovering the data. Then it turned out to be ADMA was using polynomial
> 0x14d and SW algorithm was using 0x11d. This was because syndrome
> calculated using DMA engine and recovery done using SW api.
> 

Yes, it would mean the on-disk format would be incompatible otherwise.
Everyone needs to use the same polynomial.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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