| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
[Xen-devel] Re: Xen 4.1 interrupts not delievered.
|
To: |
Keir Fraser <keir@xxxxxxx> |
|
Subject: |
[Xen-devel] Re: Xen 4.1 interrupts not delievered. |
|
From: |
Sander Eikelenboom <linux@xxxxxxxxxxxxxx> |
|
Date: |
Wed, 13 Oct 2010 09:00:27 +0200 |
|
Cc: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Ray.Lin@xxxxxxx, Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, m.a.young@xxxxxxxxxxxx, Bruce Edge <bruce.edge@xxxxxxxxx> |
|
Delivery-date: |
Wed, 13 Oct 2010 00:01:48 -0700 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<C8DAAF32.25D23%keir@xxxxxxx> |
|
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/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
|
List-unsubscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
|
Organization: |
Eikelenboom IT services |
|
References: |
<20101012171745.GA27232@xxxxxxxxxxxx> <C8DAAF32.25D23%keir@xxxxxxx> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
Hello Keir,
OK let's rephrase, in what cases is it logical that the xen serial console
freezes together with dom0 ?
For example some deadlock causes cpu0 to stall on a heavily loaded system ..
I think having the serial console available to dump the machines state is quite
vital :-(
I have tried the max_cstate=1 together with the latest 2.6.32-xen-next-pvops
kernel as dom0 kernel (which Ian's fix to the event channels).
But with the compile test it freezes just as fast.
Will try xen before changesets 20072/20073 now, probably with 2.6.31 pvops,
since 2.6.32 would need a more recent hypervisor.
--
Sander
Wednesday, October 13, 2010, 1:34:58 AM, you wrote:
> On 12/10/2010 18:17, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx> wrote:
>> A couple of that might fix the problems are:
>>
>> 1). Ian's fix to the event channels:
>> http://xenbits.xen.org/gitweb?p=people/ianc/linux-2.6.git;a=commit;h=5d30cb2a8
>> 5912ffb5f6556d55472c26801eef2ea
>> 2). Disable IRQ balancing in Xen (and also in Linux kernel). "noirqbalance"
>> 3). Pin domains, but nothing to Domain 0.
> ITYM cpu 0. Not that this should rightly make any difference that I can see.
> My suspicion would be the per-CPU IDT patches introduced during 4.0
> development. Or changes to enable deep C-state sleeps by default. One or the
> other causing lost interrupts. I think the latter can be discounted by
> max_cstate=1 as a Xen boot parameter. The former would require trying a
> build of Xen before and after changesets 20072/20073 -- they are the ones
> that did the heavy lifting to implement per-CPU IDTs.
> -- Keir
>> But it might be worth trying them out?
--
Best regards,
Sander mailto:linux@xxxxxxxxxxxxxx
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home