Re: [Xen-devel] [PATCH] fix for NMI causing auto reboot with SMP

WARNING - OLD ARCHIVES

http://lists.xen.org/

To:

"Santos, Jose Renato G" <joserenato.santos@xxxxxx>

Subject:

Re: [Xen-devel] [PATCH] fix for NMI causing auto reboot with SMP domains

From:

Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>

Date:

Thu, 20 Oct 2005 10:50:32 +0100

Cc:

xen-devel@xxxxxxxxxxxxxxxxxxx

Delivery-date:

Thu, 20 Oct 2005 09:42:44 +0000

Envelope-to:

www-data@xxxxxxxxxxxxxxxxxxx

In-reply-to:

<6C21311CEE34E049B74CC0EF339464B924B4BA@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>

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:

<6C21311CEE34E049B74CC0EF339464B924B4BA@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>

Sender:

xen-devel-bounces@xxxxxxxxxxxxxxxxxxx


On 19 Oct 2005, at 18:42, Santos, Jose Renato G wrote:

  This patches fix a NMI problem I was seeing when running xenoprof on
SMP guests.
  The machine used to auto reboot if an NMI was received in a critical
time window when
  context switching domains. There is a small time window when the GDT
may become unmapped
  (after CR3 is updated and before setting GDTR with the new GDT during
a domain context
  switch. If an NMI is received during this time window a triple fault
is triggered causing
  the machine to auto reboot. This patch fix this problem. Please,
apply.


Good catch. That's an evil bug...

 -- Keir


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-devel] [PATCH] fix for NMI causing auto reboot with SMP domains, Santos, Jose Renato G Re: [Xen-devel] [PATCH] fix for NMI causing auto reboot with SMP domains, Keir Fraser <=

Previous by Date:

[Xen-devel] Unable to get sources with the last version of mercurial, Philippe Berthault

Next by Date:

Re: [Xen-devel] current unstable doesn't boot dom0 (SMP bug?), Gerd Knorr

Previous by Thread:

[Xen-devel] [PATCH] fix for NMI causing auto reboot with SMP domains, Santos, Jose Renato G

Next by Thread:

RE: [Xen-devel] Re: network-bridge script reworked, Ian Pratt

Indexes:

[Date] [Thread] [Top] [All Lists]