[Xen-ia64-devel] RE: PATCH: dom_rid_bits command line parameter

["Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>]

I suggest changing the comment from "host rid space is shared
among the domains" to "host rid space is partitioned among
the domains".  Also it might be wise to complain/panic if
dom_rid_bits is set > 22.  If 23, only dom0 can run (no domUs).
Perhaps also if dom_rid_bits is set at all, a descriptive
message should be printed stating "dom_rid_bits is set to xx;
each domain has yy rids".

Should dom_rid_bits < 18 be allowed?  Architecturally the
answer is no, but if all guests support it, a system adminstrator
might choose to make the tradeoff (worse performance in each
domain for more concurrent domains).

> -----Original Message-----
> From: Tristan Gingold [mailto:Tristan.Gingold@xxxxxxxx] 
> Sent: Friday, April 14, 2006 8:34 AM
> To: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx; Magenheimer, Dan (HP 
> Labs Fort Collins); Williamson, Alex (Linux Kernel Dev)
> Subject: PATCH: dom_rid_bits command line parameter
> 
> Hi,
> 
> this patch add a new command line parameter to set domain rid bits.
> Tested by boot+halt of dom0+domU+domVTI.
> 
> To be applied after my previous regionreg patch.
> 
> Tristan.
> 

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