[Linux-ia64] Re: PCI DAC routines for SN

From: Jesse Barnes <jbarnes_at_sgi.com>
Date: 2002-04-25 10:36:52
On Wed, Apr 24, 2002 at 05:17:32PM -0700, David S. Miller wrote:
> Reread what I've quoted, these cards use almost nothing.
> 
> Consistent allocations account for maybe %2 to %6 of the total IOMMU
> mappings on a fully loaded sparc64 bus.  It doesn't even show up on
> the radar.
> 
> I've rolled the numbers before, I know it isn't a problem.

Ok, so there's no performance argument against adding the call.
You're just saying that since there are enough 32 bit mappings to go
around, using 64 bit mappings is silly.  Right?

Jesse
Received on Wed Apr 24 17:38:09 2002

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