[lkml]   [2001]   [May]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: alpha iommu fixes
At 6:17 PM +0400 2001-05-21, Ivan Kokshaysky wrote:
>On Mon, May 21, 2001 at 06:55:29AM -0700, Jonathan Lundell wrote:
>> 8 slots (and you're right, 6 is a practical upper limit, fewer for
>> 66 MHz) *per bus*. Buses can proliferate like crazy, so the slot
>> limit becomes largely irrelevant.
>True, but the bandwidth limit is highly relevant. That's why modern
>systems have multiple root buses, not a bridged ones.

Sure, there are systems with multiple root buses (I'm a bit fuzzy on
how well Linux handles that), and bandwidth is important, but it's
simply wrong to assume that a particular root bus will never have
more than 6 or 8 devices. There are legitimate cases (firewalls
spring to mind) where port count is driven by other considerations
than aggregate bandwidth.
/Jonathan Lundell.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:53    [W:0.184 / U:0.432 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site