From: Keir Fraser <keir@xensource.com>
To: ron minnich <rminnich@gmail.com>, Keir Fraser <keir@xensource.com>
Cc: xen-devel@lists.xensource.com, Jan Beulich <jbeulich@novell.com>
Subject: Re: rendezvousing all physical CPUs
Date: Thu, 30 Nov 2006 17:20:00 +0000 [thread overview]
Message-ID: <C194C340.550D%keir@xensource.com> (raw)
In-Reply-To: <13426df10611300912s675cc158j1eb593299ea41356@mail.gmail.com>
On 30/11/06 17:12, "ron minnich" <rminnich@gmail.com> wrote:
>> How about providing the linear address of a chunk of dom0 code that Xen
>> should run in ring 0 with CPUs in a particular configuration? We could
>> provide flags to represent useful configurations: e.g., run on all CPUs
>> atomicaly, run on CPU0 only and quiesce others, etc.
>
> I thought the goal of Jan's proposal was to have Dom0 take over this
> kind of thing, not extend Xen to do it. So his idea of getting CPUs in
> a known state, then letting Dom0 handle it, is different, is it not?
> Does this really address his problem?
Dom0 would provide the code in both cases. The CPUs would be in a known
state in both cases. It's a question of which interface is cleaner and/or
easier to implement.
-- Keir
next prev parent reply other threads:[~2006-11-30 17:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-30 16:14 rendezvousing all physical CPUs Jan Beulich
2006-11-30 16:19 ` ron minnich
2006-11-30 16:32 ` Jan Beulich
2006-11-30 16:33 ` ron minnich
2006-11-30 16:55 ` Keir Fraser
2006-11-30 17:12 ` ron minnich
2006-11-30 17:20 ` Keir Fraser [this message]
2006-12-01 8:16 ` Jan Beulich
2006-12-01 9:11 ` Keir Fraser
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