From: Keir Fraser <keir.fraser@eu.citrix.com>
To: "Jiang, Yunhong" <yunhong.jiang@intel.com>,
Espen Skoglund <espen.skoglund@netronome.com>,
"Shan, Haitao" <haitao.shan@intel.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
xen-devel <xen-devel@lists.xensource.com>,
"Li, Xin B" <xin.b.li@intel.com>
Subject: Re: [PATCH 0/5] Add MSI support to XEN
Date: Mon, 31 Mar 2008 15:15:56 +0100 [thread overview]
Message-ID: <C416B0AC.1EA2C%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <C416B04E.1EA29%keir.fraser@eu.citrix.com>
On 31/3/08 15:14, "Keir Fraser" <keir.fraser@eu.citrix.com> wrote:
> I wonder whether there is a timing issue of some sort, and it depends if the
> NIC generates the software-triggered interrupt at a fast enough rate that the
> host CPU fails to make progress if it doesn't mask the MSI? You haven't
> changed test machine at all, or put the NIC in a different PCI slot, or
> anything like that?
Also, it's got to be worth kicking your hardware guys again and find out
from them exactly what happens when that software-triggered interrupt
register gets written by the device driver. Their previous response didn't
sound very enlightening.
-- Keir
next prev parent reply other threads:[~2008-03-31 14:15 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-27 6:55 [PATCH 0/5] Add MSI support to XEN Shan, Haitao
2008-03-27 7:56 ` Keir Fraser
2008-03-27 17:32 ` Espen Skoglund
2008-03-27 22:09 ` Caitlin Bestler
2008-03-28 1:48 ` Jiang, Yunhong
2008-03-28 7:24 ` Keir Fraser
2008-03-28 8:40 ` Jiang, Yunhong
2008-03-28 9:16 ` Keir Fraser
2008-03-28 9:35 ` Jiang, Yunhong
2008-03-31 13:57 ` Jiang, Yunhong
2008-03-31 14:14 ` Keir Fraser
2008-03-31 14:15 ` Keir Fraser [this message]
2008-03-31 14:25 ` Jiang, Yunhong
2008-03-31 14:33 ` Keir Fraser
2008-04-01 2:39 ` Shan, Haitao
2008-03-28 11:37 ` Espen Skoglund
2008-03-28 11:53 ` Keir Fraser
2008-03-28 12:15 ` Espen Skoglund
2008-03-28 13:00 ` Keir Fraser
2008-04-02 14:55 ` Neil Turton
2008-04-03 12:11 ` Shan, Haitao
2008-04-03 12:31 ` Keir Fraser
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