| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] Re: [patch 14/21] Xen-paravirt: Add XEN config options a
|
To: |
Zachary Amsden <zach@xxxxxxxxxx> |
|
Subject: |
Re: [Xen-devel] Re: [patch 14/21] Xen-paravirt: Add XEN config options and disable unsupported config options. |
|
From: |
Rusty Russell <rusty@xxxxxxxxxxxxxxx> |
|
Date: |
Sat, 17 Feb 2007 15:04:35 +1100 |
|
Cc: |
xen-devel@xxxxxxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxx, Steven Hand <steven.hand@xxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Chris Wright <chrisw@xxxxxxxxxxxx>, Ian Pratt <ian.pratt@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Andi Kleen <ak@xxxxxx> |
|
Delivery-date: |
Fri, 16 Feb 2007 20:04:53 -0800 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<45D58531.4010808@xxxxxxxxxx> |
|
List-help: |
<mailto:xen-devel-request@lists.xensource.com?subject=help> |
|
List-id: |
Xen developer discussion <xen-devel.lists.xensource.com> |
|
List-post: |
<mailto:xen-devel@lists.xensource.com> |
|
List-subscribe: |
<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
|
List-unsubscribe: |
<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
|
References: |
<C1FB336B.98D6%keir@xxxxxxxxxxxxx> <45D58531.4010808@xxxxxxxxxx> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
On Fri, 2007-02-16 at 02:19 -0800, Zachary Amsden wrote:
> Doesn't stop_machine_run already take care of getting you out of all
> kernel threads? So you can only be sleeping, not preempted, in which
> case, this might not be an issue?
No, stop_machine only protects against preempt-disabled regions.
I thought about making that particularly hammer bigger, but noone had
needed it yet. It would simply require a runtime way of disabling
further preemption and flushing preempted threads (AFAICT there can be
no deadlock issues with this).
Rusty.
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home