RE: Initialization of cr.dcr

From: Chen, Kenneth W <>
Date: 2005-06-04 04:11:25
Christian Hildner wrote on Friday, June 03, 2005 2:02 AM
> playing around with speculation I found that on initialization is 
> not set, while the comment says "Initialize default control register to 
> defer all speculative faults". To be conform to the comment (and also to 
> the expected behavior) the value IA64_DCR_DM should be added in 
> arch/ia64/kernel/setup.c.

It should be the other way around: update the comments to reflect what
the code does.  Turning off is a big win for speculative load
where you do want the tlb miss to be serviced up front.

- Ken

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Received on Fri Jun 3 14:15:38 2005

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