From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Andreas Olsowski <andreas.olsowski@leuphana.de>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: megasas stops I/O when running kernel as dom0 under xen4.1/4.2
Date: Mon, 22 Aug 2011 10:05:25 +0100 [thread overview]
Message-ID: <4E521BD5.2040609@citrix.com> (raw)
In-Reply-To: <4E4EA725.30405@leuphana.de>
On 19/08/11 19:10, Andreas Olsowski wrote:
> Am 19.08.2011 18:49, schrieb Andrew Cooper:
>
> > The only change you need to make is in megasas_probe_one() in
> > megaraid_sas_base.c
> >
> > Add a call to pci_enable_msi(pdev) immediately after the current
> call to
> > pci_set_master(pdev);
> >
> > ~Andrew
> >
>
> Yep, that works fine. Removed the module option as well.
>
> root@tarballerina:~# cat /proc/interrupts |grep mega
> 2236: 69010 0 0 0 0
> 0 0 0 xen-pirq-msi megasas
>
> The same procedure that would have lead to almost instant errors has
> not brought them to appear again.
>
Good. This is what we are seeing as well. I am still awaiting a reply
from LSI on this topic.
Unfortunately, this does point to a regression in the way Xen deals with
legacy interrupts.
--
Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
T: +44 (0)1223 225 900, http://www.citrix.com
next prev parent reply other threads:[~2011-08-22 9:05 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-11 13:59 megasas stops I/O when running kernel as dom0 under xen4.1/4.2 Andreas Olsowski
2011-08-11 16:27 ` Simon Rowe
2011-08-11 22:51 ` Konrad Rzeszutek Wilk
2011-08-12 6:31 ` xen.frontend flag for higher display resolution (vnc) for HVM domU domains Mark Schneider
2011-08-12 7:26 ` Marc - A. Dahlhaus
2011-08-12 7:42 ` megasas stops I/O when running kernel as dom0 under xen4.1/4.2 Simon Rowe
2011-08-12 9:11 ` Andreas Olsowski
2011-08-12 9:23 ` Simon Rowe
2011-08-15 10:49 ` Simon Rowe
2011-08-15 12:52 ` Andreas Olsowski
2011-08-19 12:28 ` Andrew Cooper
2011-08-19 14:17 ` Andreas Olsowski
2011-08-19 14:57 ` Andrew Cooper
2011-08-19 16:37 ` Andreas Olsowski
2011-08-19 16:49 ` Andrew Cooper
2011-08-19 18:10 ` Andreas Olsowski
2011-08-22 9:05 ` Andrew Cooper [this message]
2011-08-24 12:06 ` Andrew Cooper
2011-08-24 16:57 ` Andrew Cooper
2011-08-24 17:09 ` Konrad Rzeszutek Wilk
2011-08-24 17:20 ` Andrew Cooper
2011-08-26 18:16 ` Andrew Cooper
2011-08-26 18:32 ` Andrew Cooper
2011-08-30 12:02 ` Andreas Olsowski
2011-08-30 12:11 ` Andrew Cooper
2011-08-30 12:46 ` Keir Fraser
2011-08-12 9:02 ` Simon Rowe
2011-08-12 16:26 ` Pasi Kärkkäinen
2011-08-15 7:44 ` Simon Rowe
2011-08-12 16:25 ` Pasi Kärkkäinen
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